WORLD'S FAMOUS BOOKS The Descent of Man And Selection Relation in By Charles Darwin Revised Edition Illustrated New York and London MERRILL AND BAKER Publishers to Sex CUAIILES DaBWIN PREFACE TO THE SECOND EDITION During the successive reprints of the first edition of this work, published in 1871, I was able to introduce several Important corrections; and now that more time has elapsed, I have endeavored to profit by the fiery ordeal through which the book has passed, and have taken advantage of all the criticisms which seem to me sound I ain also greatly Indebted to a large number of correspondents for the communication of a surprising number of new facts and remarks These have been so numerous, that I have been able to use only the more important ones; and of these, as well as of the more important corrections, I will append a list Some new illustrations have been introduced, and four of the old drawings have been replaced by better ones, done from life by Mr T W Wood I must especially call attention to some observations which I owe to the kindness of Prof Huxley (given as a supplement at the end of Part I.), on the nature of the differences between the brains of man and the higher apes I have been particularly glad to give these observations, because during the last Sew years several memoirs on the subject have appeared on the Continent, and their importance has been, in some cases, greatly exaggerated' by popular writers I may take this opportunity of remarking that my that I attribute all changes of critics frequently assume the corporeal structure and mental power exclusively to such variations as- are often called natural selection of spontaneous; whereas, even in the first edition of the 'Origin great weight must distinctly stated that of Species,' I be attributed to the inherited effects of use and disuse, with respect both to the body and mind I also attributed some amount of modification to the direct and prolonged action of changed conditions of life Some allowance, too, must be made for occasional reversions of structure; nor must we forget what I have called "correlated" growth, meaning, thereby, that various parts of the organization are in some unknown manner so connected, that when one part varies, so others; and if variations in the one Vi PREPACK TO THE SECOND EDITION are accumulated by selection, other parts will be modified Again, bas been said by several critics, that when I found that many details of structure in man could not be explained through natural selection, I invented sexual selection; I gave, however, a tolerably clear sketch of this principle in the first edition of the 'Origin of Species,' and I there stated that it was applicable to man This subject of sexual selection has been treated at full length in the present work, simply because an opportunity was here first afforded me I have been struck with the likeness of many of the halffavorable criticisms on sexual selection, with those which appeared at first on natural selection; such as, that it would explain some few details, but certainly was not applicable to the extent to which I have employed it My conviction of the power of sexual selection remains unshaken; but it is probable, or almost certain, that several of my conclusions will hereafter be found erroneous; this can hardly fail to be the case in the first treatment of a subject When naturalists have become familiar with the idea of sexual selection, it will, as I believe, be much more largely accepted; and it has already been fully and favorably received by several capable judges it Down, Beckenham, Kent, September, 1874 CONTENTS Pages 1—4 Introduction PART I THE DESCENT OR ORIGIN OF MAN CHAPTER I THE EVIDENCE OP THE DESCENT OP MAN FROM SOME LOWER FORM — on the origin of man Homologous the lower animals Miscellaneous points of correspondence Development Rudimentary structures, muscles, sense-organs, hair, bones, reproductive organs, &c.— The bearing of these three great classes of facts on the origin of man Nature of the evidence bearing structures in — man and — — CHAPTER II ON THE MANNER OP DEVELOPMENT OP MAN PROM SOME LOWER FORM — Variability of body and mind in man Inheritance— Causes of variability Laws of variation the same in man as in the lower animals— Direct action of the conditions of life— Effects of the increased use and disuse of parts Arrested development— Reversion Correlated variation Rate of increase— Checks to increase Natural selection Man the most dominant animal in the world Importajice of his corporeal structure The causes which have led to his becoming erect— Consequent changes of structure Decrease in size of the canine teeth Increased size and altered shape of the skull Nakedness Absence of a, tall— Defenseless condition of man — — — — — — — — — — vii — — 25 CONTENTS Vlii CHAPTER III COMPARISON OF THE MENTAL POWERS OF MAN AND THE LOWER ANIMALS The difference in mental power between the highest ape and the lowest savage, immense Certain instincts in common The emotions Curiosity— Imitation Attention— Memory ImaginationReason— Progressive improvement Tools and weapons used by animals— Abstraction, Self-consciousness— Language Sense of beauty— Belief in God, spiritual agencies, superstitions — — — — — CHAPTER Page — — $3 IV COMPARISON OF THE MENTAL POWERS OP MAN AND THE LOWER ANIMALS— Continued The moral sense— Fundamental proposition— The cial qualities of soof sociability— Struggle between opposed inMan a social animal the more enduring social instincts other less persistent instincts The social virtues alone animals— Origin stincts — — — conquer regarded by savages— The self-regarding virtues acquired at a — The of development importance of the judgment of later stage the members of the same community on conduct— Transmission of moral tendencies— Summary 94 CHAPTER Y ON THE DEVELOPMENT OP THE INTELLECTUAL AND MORAL FACULTIES DURING PRIMEVAL AND CIVILIZED TIMES of the intellectual powers through natural selecof imitation Social and moral faculties Their development within the limits of the same tribe— Natural selection as affecting civilized nations— Evidence that civilized nations were once barbarous Advancement tion —Importance — — 124 CHAPTER VI ON THE AFFINITIES AND GENEALOGY OP MAN Position of man in the animal series— The natural system genealogical—Adaptive characters of slight value Various small points of resemblance between man and the Quadrumana- Rank of man in the natural system—Birthplace and antiquity of man^ Absence of fossil connecting-links— Lower stages in the genealogy of man, as Inferred, firstly from his affinities and secondly from his structure— Early androgynous condition of the Vertebrata Conclusion — — 142 — CONTENTS Ix Page CHAPTER VII ON THE RACES OF MAN The nature and value of specific characters— Application to the races of man—Arguments in favor of, and opposed to, ranking the so-called races of man as distinct species— Sub-species — Monogenists and polygenists— Convergence of character— Numerous points of resemblance in body and mind between the most distinct races of man— The state of man when he first spread ovei the earth—Each race not descended from a single pair— The extinction of races —The formation of races— The effects of crossing — Slight influence of the direc* action of the conditions of life Slight or no influence of natural selection— SexuaJ selection PART 162 II SEXUAL SELECTION CHAPTER YIII PRINCIPLES OP SEXUAL SELECTION Secondary sexual characters — Sexual selection— Manner of action -Excess of males— Polygamy—The male alone generally modified through sexual selection— Eagerness of the male— Variability of the male — Choice exerted by the female — Sexual compared with natural selection— Inheritance at corresponding periods of life, at corresponding seasons of the year, and as limited by sex Relations between the several forms of inheritance — Causes why one sex and the young are not modified through sexual selectionSupplement on the proportional numbers of the two sexes throughout the animal kingdom The proportion of the sexes in relation to natural selection — — 203 CHAPTER IX SECONDARY SEXUAL CHARACTERS IN THE LOWER CLASSES OP THE ANIMAL KINGDOM These characters absent in the lowest classes— Brilliant colors MoUusca— Annelids— Crustacea, secondary sexual characters strongly developed; dimorphism; color; characters not acquired before maturity— Spiders, sexual colors of; stridulation by the males— Myriapoda CHAPTER X SECONDARY SEXUAL CHARACTERS OP INSECTS Diversified structures possessed by the males for seizing the females Differences between the sexes, of which the meaning is — 257 — CONTENTS C Page not understood— Difference in size between tiie sexes— Thysanura musical powers possessed by the males alone— Orthoptera, musical instruments of the males, much diversified in structure; pugnacity; colors— NeuVoptera sexual differences in color— Hymenoptera, pugnacity and colors— Ooleoptera, colors; furnished with great horns, apparently as an ornament; battles; stridulating organs generally common to both sexes — Diptera—Hemiptera—Homoptera, INSECTS, 272 CHAPTER XI continued.— ORDER LEPIDOPTERA (Butterflies and moths.) — Courtship of butterflies— Battles— Ticking noise Colors common to both sexes, or more brilliant in the males— Examples— Not due to the direct action of the conditions of life Colors adapted for protection-Colors of moths Display— Perceptive powers of the Lepidoptera— Variability Causes of the difference in color between the males and females — Mimicry, female butterflies more brilliantly colored than th'e males-— Bright colors of caterpillars Summary and concluding remarks on the secondary sexual characters of insects— Birds and Insects compared — — — 304 CHAPTER XII SECONDARY SEXUAL CHARACTERS OP FISHES, AMPHIBIANS AND REPTILES Courtship and battles of the males— Larger size of the females— Males, bright colors and ornamental appendages; other strange characters— Colors and appendages acquired by the males during the breeding-season alone— Fishes with both sexes bril- Fishes: liantly colored— Protective colors— The less conspicuous colors of the female cannot be accounted for on the principle of protection—Male fishes building nests, and taking charge of the ova and Amphibians: Differences in structure and color between the sexes— Vocal organs Reptiles: Chelonians— CrocodilesSnakes, colors in some cases protective— Lizards, battles of— Ornam.ental appendages Strange differences in structure between the sexes— Colors— Sexual differences almost as great as with birds young — CHAPTER 321 XIII 'SECONDARY SEXUAL CHARACTERS OF BIRDS Sexual differences— Law of battle— Special weapons— Vocal o,rgans —Instrumental music— Love-antics and dances— Decorations, permanent £ind seasonal— Double and single annual moults— Display of ornaments by the males 356 INDEX 658 Protective coloring in butterflies, 308; in lizards, 354; in birds, 467, 484; in 537 mammals, nature of the dull coloring of female Lepidoptera, 317, 318, 321 resemblances in fishes, 340 Protozoa, absence of secondary sexual characters in, 257 Pruner-Bey, on the occurrence of the supra-condyloid foramen in the humerus of man, 22; on the color of negro infants, 563 Prussia, numerical proportion of male and female births in, 237 Psocus, proportions of the sexes in, Ainos, 556; on the Giuliano, 581 monogamous, man, 237; relative and woman, 238 Quichua Indians, 33; of the, 385, 386; nuptial assemblages of, 400; triple moult of the, 466; protective coloration and of, 468 nidiflcation Pugnacity of fine-plumaged male birds, 395 Pumas, stripes of young, Puppies learning from clean their faces, 458 cats to 71 Pycnonotus, hsemorrhous, pugnacity of the male, 357; display of under tail coverts by the male, 396 Pyranga ffistiva, male aiding in incubation, size in man local varia- tion of color in the, 191; no gray hair among the, 564; hairlessness of the, 666; long hair of the, 574 Quiscalus major, 220; proportions of the sexes of, in Florida and Honduras, 244 R 215: summer and winter plumage Puff-lDirds, colors of the, 449 San of 409 proportion of sexes in Quetelet, 251 Ptarmigan, women Querquedula acuta, 447 Pyrodes, difference of the sexes in color, 291 Rabbit, white tail of the, 537 Rabbits, domestic, elongation of the skull in, 64; modification of the skull in, by the lopping of the ear, 54; danger-signals of, 97; numerical proportion of the sexes in, 241 Races, distinctive characters of, 163, 164; or species of man, 164; crossed, fertility or sterility of, 166; of man, variability of the, 170; of man, resemblance of, in mental characters, 174; formation of, 176; of man, extinction of, 177; effects of the crossing of, 187; of man, formation of the, 187; of man, children of the, 552; beardless, aversion of, to hairs on the face, 574 Raflles, Sir S., on the banteng 532 Q Rafts, use Quadrumana, hands of, 48; differences between man and the, 145; sexual differences of color in, ornamental characters of, analogy of sexual differences of, with those of man, fighting of males for the 553; 532; 543; monogamous females, 657; of beards of the, 585; habits in man, 26 Quatrefages, A de, on the occurrence of a rudimentary tail in man, 22; on variability, 29; on the moral sense as a distincbetween man and animals, 94; civilized men stronger than savages, 132; on the fertility of Australian women with white men, 166; on the Paulistas of Brazil, 169; on the evolution of the breeds of cattle, 173; on the Tews, 1S8; on the liability of negroes to tropical fevers after tion residence in a cold climate, 189; field- on '^3 difference between and house-slaves, 191; on the i"!fluence of climate on color, 191; colors of annelids, 261; Raia 67 batis, teeth of, 331 clavata, female spined on the back, 327; sexual difference In the teeth of, 331 maculata, teeth of, 331 Rails, spur-winged, 360 Ram, mode of fighting of the, 504; African, mane of an, 528; fattailed, 528 596 Quain, E., on the variation of the muscles of, 47, 175 Rage, manifested by animals, on the Rameses Ramsay, II., features of, 164 Mr., on the Australian musk-duck, 355; on the regent bird, 408; on the incubation of Menura superba, 445 Rana esculenta, vocal sacs of, 346 Rat, common, general dispersion of, a consequence of superior cunning, 78; supplantation of the native, in New Zealand, by the European rat, 186; common, said to be polygamous, 214; numerical proportion of the sexes in, 241 Rats, enticed by essential oils 525 ^^tionality of birds, 405 Kattle-snakes, difference of the sexes in the, 347; rattles as a call, 349 INDEX Haven, vocal organs of the, 366; stealing bright objects, 408; pied, of the Peroe Islands, 418 Rays, prehensible organs of male, 327 young Reade, Winwood, Razor-bill, of the, 481 suicide among savages in Africa, 113; mulattoes not prolific, 167; effect of castration of horned sheep, 502; on the Guinea sheep, 230; on the occurrence of a man© in an African ram, 528; on the negroes' appreciation of the beauty of their women, 572; on the admiration of negroes for a black skin, 573; on the idea of beauty among negroes, 676; on the JoUofs, 582; on the marriage-customs of the negroes, 593 Reason, in animals, 73 Redstart, American, breeding in immature plumage, 479 new mates found Redstarts, by, 403 Reduvidse, stridulation of, 278 Reed-bunting, head feathers of the male, 396; attacked by a bullfinch, 407 Reefs, fishes frequenting, 339 Reeks, H., retention of horns by breeding deer, 499; cow rejected by a bull, 520; destruction of piebald rabbits by eats, 537 Regeneration, partial, of lost parts in man, Regent-bird, 408 Reindeer, horns of the, 228; battles of, 497; horns of the female, 499; antlers of, with numerous change of points, 506; winter preferences sexual the, 537; shown by, 518 Relationship, terms of, 588 among Religion, deficiency of, certain races, 91; psychical ele- ments of, Remorse, 92 deficiency of, 111; savages, 128 Rengger, on the diseases of Cebus Azaras, 7; on the diversity of the mental faculties of monkeys, 26; on the Payaguas Indians, 31; on the inferiority of among Europeans to savages in their taken Wy 32; revenge monkeys, 67; on maternal affection in a Cebus, 68; on the reasoning powers of American monkeys, 75; on the use of stones by monkeys for cracking hard n»ts, 78; on the sounds uttered by Cebus" Azarse, 82; on the signal-cries of monkeys, 85; on the polygamous habits of Mycetes caraya, 213; on the voice of the howling monkeys, 523; on the odor of Cervus campestris, 524; on the beards of Mycetes caraya and Pithecia senses, 659 Satanas, 527; on the colors of 530; on the colors of Cervus paludosus, 532; on sexual Pelis mitis, differences of color in Mycetes, 532; on the color of the infant Guaranys, 553; on the early maturity of the female of Cebus azarse, 553; on the beards of the Guaranys, 556; on the emotional notes employed by monkeys, 566; on American keys, polygamous mon- 585 Representative species, of birds, 462 Reproduction, unity of phenomena of, throughout the mammalia, 8; period of, in birds, 479 Reproductive system, rudimentary structures in the, 23; accessory parts of, 156 Reptiles, 346 and birds, alliance of, 169 Resemblances, small, between man and the apes, 146 Retrievers, exercise of reasoning faculties by, 75 Revenge, manifested by animals, 67 Reversion, perhaps the cause 35; of some bad dispositions, 134 Rhagium, difference of color in the sexes of a species of, 292 Rhamphastos carinatus, 487 Rhea darwinii, 473 nakedness of, 55; of, 501; horns of, used defensively, 513; attacking white Rhinoceros, horns or gray horses, 535 Rhynchsea, sexes and young of, 470 australis, 470 bengalensis, 470 capensis, 471 Rhythm, perception of, by ani- mals, 564 Richard, M., on rudimentary muscles in man, 12 Richardson, Sir J., on the pairing of Tetrao umbellus, 362; on Tetrao urophasianus, 368; on the drumming of grouse, 371; on the dances of Tetrao phasianellus, 376; on assemblages of grouse, 400; on the battles of male deer, on the reindeer, 499; on the horns of the musk-ox, 501; on antlers of the reindeer with numerous points, 506; on the moose, 511 on the Scotch deerhound, 497; , 512 Richter, Jean Paul, on imagination, 72 profiigate female on Riedel, pigeons, 412 buttermimicry in on Mr., Riley, flies, 320; birds' disgust at taste of certain caterpillars, 322 Ring-ouzel, colors and nidiflcation of the, 449 INDEX 660 Ripa, Father, on the difficulty of aisUnguishing the races of the Chinese, 163 Rivalry, in singing, between male birds, 364 237 African, tusks and knobs of the, 516 Rivers, analogy of, to islands, 154 Roach, brightness of male during River-hog, breeding-season, 336 Robbery, of strangers, considered honorable, 114 Robertson, Mr., remarks oh the development of the horns in the roebuck and red-deer, 407; young of the, 475 576 Rolle, F., on the origin of man, 2; on a change in German families settled in Georgia, 192 Roller, harsh cry of, 366 Romans, ancient, gladiatorial exhibitions of the, 119 Ronjou, M A., coincidence of ar- with poly- Rook, voice of the, 370 Rossler, Dr., on the resemblance of the lower surface of butterflies to the bark of trees, 308 Rostrum, sexual difference in the length of, in some weevils, 204 Roj'er, Madlle., mammals giving suck, 159 Rudimentary organs, origin 11; of, 23 Rudiments, presence guages, 87 Rudolphi, on the of, in lan- want of connec- tion between climate and the color of the skin, 187 Ruff, supposed to be polygamous, 215; proportion of the sexes in the, 243; pugnacity of the, 357; double moult in, 385, 387; dura- tion of dances of, 400; attraction of the, to bright objects, 407 Ruminants, male, in, 237 S Robinet, on the difference of size of the male and female gocoons of the silk-moth, 276 Rodents, uterus in the, 36; absence of secondary sexual characters in, 214; sexual differences in the colors of, 529 Roe, winter change of the, 537 Rohlfs, Dr., Caucasian features in negro, 163; fertility of mixed races in Sahara, 167; colors of birds in Sahara, 485; ideas of beauty amongst the Bornuans, rested development dactylism, 35 Ruticilla, 455 Rutimeyer, Prof., on the physiognomy of the apes, 52; on the sexual differences of monkeys, 556 Rutlandshire, numerical proportion of male and female births 229 Robin, pugnacity of the male, 360; autumn song of the, 356; female singing of the, 365; attacking other birds with red in their plumage, Ruppell, on canine teeth In deer and antelopes, 510 proportion of male and female births in, 211, Russia, numerical disappearance of canine teeth in, 52, 557; generally polygamous, 213; suborbital pits of, 525: sexual differences of color in, 530 Rupicola crocea, display of plumage by the male, 390 Sachs, Prof., on the behavior of the male and female elements \n fertilization, 218 Sacrifices, human, 140 Sagittal crest in male apes Australians, Sahara, mixed races birds of the, 450; animal in, 167; of inhabitants of the, Sailors, and 553 fertility growth conditions 485 delayed of, of by 30; longsighted, 32 Sailors and soldiers, difference in life, the proportions of, 30 John, Mr., on the attachment St mated of birds, 405 Kilda, beards of the inhabitants of, 555 St Salmo eriox, and S umbla, color- ing of the male, during breeding season, 336 lycaodon, 331 the salar, 331 Salmon leaping out of fresh water, 104; male, ready to breed before the female, 208; proportion of the sexes in, 244; male, pugnacity of the, 328; male, characters of during the breeding season, 330, 336; spawning of the, 341; breeding of immature male, 480 Salvin, O inheritance of mutilated feathers, 57, 384, 603; on the Humming-birds, 380, 597; on the numerical proportion of the sexes in Humming-birds, 243, on Chamsepetes and Penel483; ope, 373; on Selasphorus platycercus, 373; Pipra deliciosa, 374; Samoa on Chasmorhynchus, Islands, the natives Sand-skipper, 384 beardlessness of of, 555, 575 266 Sandwich Islands, variation in the skulls of the natives of the, 25; decrease of native population, 181; population of, 253; superiority of the nobles In the, 581 • Islanders, lice of, San Gluliano, women 166 of, 581 Santali, recent rapid increase of the, 44; Mr Hunter on the, 187 661 INDEX Sapbirina, males characters the of Schomburgk, Sir R., on the pugnacity of the male musk-duck of Guiana, 358; on the courtship of, 267 Sarkidiornis melanonotus, acters of the young, 469 char- on Pontoporeia afflnis, Sars, O., 262 of Rupicola crocea, 390 Schoolcraft, Mr., on the difficulty of fashioning stone imple- of ments, 48 Schweinfurth, complexion of ne- difference of coloration in the sexes of 312 Saturniidse, coloration of the, 311, groes, 551 Scieena aquila, 343 Solater, P L., on modified sec- Saturnia, carpinl attraction males by the female, 248 lo, ondary wing-feathers In the males of Pipra, 373; on elongated feathers in nightjars, 379; on the species of Chasmorhynchus, 384; on the plumage of Pelecanus 312 Savage, Dr., on the fighting of the male gorillas, 557; on the habits of the gorilla, 586 and Wyman on the polygamous habits of the gorilla, 213 Savages, uniformity of, exaggerated, 27; long-sighted, 32; rate of increase among, usually small, 43; retention of the prehensile power of the feet by, 50; imitative faculties of, 85, 126; causes of low morality of, 115; tribes of, supplanting one another, 125; improvements in the arts among, 141; arts of, 175; fondness of for rough music, 375; attention paid by, to personal appearance, 568; relation of the sexes among, 586 malar Dr., division of bone, 37 Saw-fly, pugnacity of a male, 289 Saw-flies, proportions of the sexes Saviotti, in, 260 Saxicola rubicola, young of, 483 Scalp, motion of the, 13 Scent-glands in snakes, 348 SchaafEhausen, Prof., on the development of the posterior molars in different races of man, on the jaw from La Naulette, on the correlation between muscularity and prominent supra-orbital ridges, 42; on the mastoid processes of man, 61; on modifications of the cranial bones, 54; on human sacrifices, 140; on the probable speedy extermination of the anthropomorphous apes, 152; on the ancient inhabitants of Europe, 177; on the effects of use and disuse of parts, 192; on the superciliary ridge in man, 551; on the absence of race-differences in the 20; 39; infant skull in man, ness, 552; on ugli- 578 on the elytra of Schaum, Dytiscus and Hydroporus, 273 dragon-flies, 288 on Schelver, Schiodte, on the stridulation of H., Heterocerus, 300 Schlegel F von, on the complexity, of the languages of uncivilized peoples, 88 Prof., on Tanysiptera, 463 Schleicher, Prof., on the origin of language, 43 84 onocrotalus, 388; on the plan- tain-eaters, 453: on the sexes and of Tadorna variegata, 473; on the colors of Lemur macaco, 532; on the stripes in asses, 543 Scoleclda, absence of secondary sexual characters in 267 Scolopax frenata, tail-feathers of, young 372 gallinago, javensis, drumming of, 372 of, tail-feathers 372 major, assemblies of, 400 sound produced Wilsonii, by, 373 Scolytus, stridulation of, 299 Scoter-duck, black, sexual difference in coloration of the, 487; bright beak of male, 487 Scott, Dr on Idiots smelling their food, 35 J., on the color of the beard in man, 653 Scrope, on the pugnacity of the male salmon, 330; on the battles of stags, 497 Scudder, S H., Imitation of the stridulation of the Orthoptera, 281; on the stridulation of the , on a Devonian Acridiidee, 283; insect, 286; on stridulation, 561 Sculpture, expression of the ideal of beauty by, 576 Sea-anemones, bright colors of, 257 Sea-bear, polygamous, 214 Sea-elephant, male, structure of the nose of the, 524; polygamous, 214 Sea-lion, polygamous, 214 Seal, bladder-nose, 523 Seals, their sentinels generally females, 97; evidence furnished by, on classification, 145; polygamous habits of, 214; battles of male, 496; canine teeth of male, 498; sexual differences, 611; pairing of, 518; sexual peculiarities of, 523; in the coloration of, 530; appreciation of music by, 563 Sea-scorpion, sexual differences in, 334 Season, changes of color in birds, in accordance with the, 384; INDEX 662 changes of plumage of birds in relation to, on horns of reindeer, B02 Selasphorus platycercus, acuminate first primary of the male, Seidlitz, 373 J., on the habits of the black and red grouse, 215 Selby, P Selection, double, 221 of male by female birds, 399, 416 methodical, of Prussian grenadiers, 28 sexual, explanation of, 205, 209, 216; influence of, on the coloring of Lepidoptera, 317 sexual and natural, con, , , trasted, Sexual characters, effects of the 456 Seasons, inheritance at corresponding, 224 Sebituani, African chief, trying to alter a fashion, 570 Sebright Bantam, 233 Secondary sexual characters, 203; relations of polygamy to, 212; transmitted through both sexes, 221; gradation of, Tn birds, 424 Sedgwick, W., on hereditary tendency to produce twins, 44 Seemann, Dr., on the different appreciation of music by different peoples, 564; on the effects of music, 566 221 Self-command, habit of, inherited, 112; estimation of, 115 Self-consciousness, in animals, 80 Self-preservation, instinct of, 108 Self-sacrifice, by savages, 109; estimation of 115 Semilunar fold, 17 Semnopithecus, 149; long hair on the heads of species of, 146, 598 chrysomelas, sexual differences of color in, 533 comatus, ornamental hair on the head of, 544 frontatus, beard, &c., of, 546 nasica, nose of, 146 nemseus, coloring of, 546 rubicundus, ornamental hair on the head of, 543 inferiority of Europeans to savages in the, 32 Sentinels, among animals, 97, 104 Serpents, instinctively dreaded by Senses, apes and monkeys, 65, 69 hermaphroditism Serranus, • loss of, 226; limitation of, differences in man, selection, explanation 226 of, 216; influence of, on the coloring of Lepidoptera, 315; objections to, 490; action of, in 205, 209, mankind, 589 similarity, 251 Prof., sizes Shaler, of whales, 511 Sharks, prehensile organs sexes in of male, 327 Sharpe, tropics, • Europeans Dr., in the 190 R B., on Tanyslptera Sylvia, 445; on Ceryle, 451; on the , young male audi, of Dacelo Gaudich- 461 Shaw, Mr., on the pugnacity of the male salmon, 328 J., on the decorations of , birds, 377 Sheep, danger-signals of, 97; sexual differences in the horns of, 225; horns of, 229, 501; domestic, sexual differences of, late developed, 232; numerical proportion of the sexes in, 241; inheritance of horns by one sex, 501; effect of castration, 502; mode of fighting of, 504; arched foreheads of some, 528 Merino, loss of horns in fe- males of, 226; horns of, 230 difference in form of, in male and female Gasteropoda, 259; beautiful colors and shapes Shells, of, 260 Shield-drake, pairing with common duck, 409; New Zealand, sexes and young of, 473 Shooter, J., on the Kafllrs, 574; on the marriage customs of the KafBrs, 593 Shrew mice, odor of, 524 Shrike, Drongo, 454 Shrikes, characters of young, 459 Shuekard, W E., on sexual differences in the wings of Hymenoptera, 274 Shyness of adorned male birds, 397 Siagonium, sexes males proportions in, 249; of, 296 of dimorphism the in in, Slam, proportion of male and fe- Sex, inheritance limited by, 225 Sexes, relative proportions of, in man, 237, 252; probable relation of the, in primeval man, 5S5 Sexual characters, secondary, 203; relations of polygamy to, 212; transmitted through both sexes, Siamese, general beardlessness of the, 555; notions of beauty of the, 573; hairy family of, 596 Sidgwick, H., on morality in hypothetical bee community, 96; our actions not entirely directed by pain and pleasure, 116 Siebold, C T von, on the proportion of sexes in the Apus, 251; on the auditory apparatus male births 157 221; gradation of, in birds, 424 and natural trasted, 221 selection, con- in, 239 INDEX the of strldulant Orthoptera, 281 Sight, inheritance of long and short, 32 Signal-cries of monkeys, 85 Silk-moth, proportion of the sexes in, 245, 247; Allan thus, prof Canestrini, on the destruction of its larvae by wasps, 247; difference of size of the male and female cocoons of the, 275; pairing of the, 314 Slmiadse, 148; their origin and divisions, 161 Similarity, sexual, 220 Singing of the Cicadse and Fulgorldas, 279; of tree-frogs, of birds, object of the, 364 Slrenia, nakedness of, 54 Sirex juvencus, Siricldse, on the colors of the Cape Bland, 531; on the colors of the gnu, on Hottentot notions of 631; beauty, 573; disbelief in communistic marriages, 583 Smith, F., on the Cynipidaj and Tenthredlnlds5, 250; on the relative size of the sexes of Aculeate Hymenoptera, 277; on the difference between the sexes of ants and bees, 289; on the stridulation of Trox sabulosus, 300; on the stridulation of Mononychua pseudacori, 302 Smynthurus luteus, courtship of 277 Snakes, pairing with a canary, 410 of, 348; of, male, 39 Snipe, drumming of the, 372; coloration of the, 486 , painted, sexes and young of, 470 of, 350, 353 Size, relative, of the sexes of insects, 275 Skin, movement of the, 13; nakedness of, in man, 54; color of the, 187 and hair, correlation of col- of, 192 of, in man, 25; cubic contents of, no absolute test of Intellect, 52; Neanderthal, capacity of the, 53; causes of modification of the, 53; difference of In form and capacity In different races of 164; Skull, variation men variability of the shape of the, 170; differences of, in the sexes in man, 552; artificial modification of the shape of, 569 Skunk, odor emitted by the, 524; white tall of, protective, 538 Slavery, prevalence men, Slaves, of, 114; of wo- 588 difference and house-slaves, between field 191 Sloth, ornaments of male, 529 Smell, sense of, in man and ani- mals, 17 Smith, Adam, on the basis of sympathy, 103 Sir A., on the recognition of women by male Cynocephali, 8; on revenge by a baboon, 67; on an instance of memory in a baboon, 72; on the retention of their color by the Dutch in South Africa, 188; on the polygamy of the South African antelopes, 213; on the polygamy of the lion, 214; on the proportion of the sexes In Kobus ellipsip, 242; on Bucephalus capensis, 347; on South African lizards, 353; on fighting gnus, 497; rymnus, on the horns of rhinoceroses, on the fighting of lions, 516; 601; differences "Snarling muscles," sexes Sltana, throat-pouch of the males or sexual mental powers ardency of, 348 347; 289 difference of the in, 289 Siskin, 388; 346; 663 solitary, assemblies of, 400 , Snipes, arrival of male before the female, 208; pugnacity of male, double moult in, 385 Snow-goose, whiteness of the, 488 Social animals, affection of, for each other, 97; defense of, by the 358; males, 104 Sociability, the sense of duty connected with, 95; Impulse to, In animals, 102 r manifestations of, man, in mals, 105; instinct of, in ani- 106 probable, of primeval men, 60; influence of, on the development of the Intellectual faculties, 125; origin of, in man, Sociality, 126 American, measurements Soldiers, of 31 and sailors, difference In the proportions of, 31 Solenostoma, bright colors and marsupial sack of the females of, 342 Song of male birds appreciated by their females, 89; want of, in brilliant plumaged birds, 395; of birds, 444 Sorex, odor of, 523 Sounds admired alike by man and animals, 90; produced by fishes, 343; produced by male frogs and toads, 346; duced by instrumentally pro- birds, 371 et seq Spain, decadence of, 137 Sparassus smaragdulus, difference of color in the sexes of, 268 Sparrow, pugnacity of the male, acquisition of the Linnet's 356; song by a, 366; coloration of 467; immature plumage of the, the, 461 , white-crowned, young the, 481 Sparrows, house- and tree-, 449 of INDEX 664 new mates found Sparrows, by, sexes and young learning to sing, 565 , Spathura Underwoodi, Spawning Spear, man, of fishes, 337, ill; of, 383 340 used before dispersion of 175 causes of the advance- Species, ment of, 133; distinctive characters of, 162; or races of man, 164; sterility and fertility of, crossed, 166; supposed, of man, 170; gradation of, 171; difficulty of defining, 171; representative, of birds, 462; of birds, compara- when differences between the sexes of distinct, 463 Spectrum femoratum, difference of color in the sexes of, 287 Speech, connection between the brain and the faculty of, 85; connection of intonation with music, '564, "Spel" of the black-cock, 370 Spencer, Herbert, on the influence of food on the size of the jaws, 32; on the dawn of intellig:ence, 66; on the origin of the belief in agencies, 91; on the spiritual origin of the moral sense, 119; on music, 566 Spengel, disagrees with explanation of man's hairlessness, 596 496 311 Sperm-whales, battle^ of male, coloration of the, Sphinx, Humming-bird, 313 Mr Bates on the caterpillar , of a 321 musky odor of, 305 268; parental feeling in, male, more active than feproportion of the male, 217; sexes in, 250; secondary sexual characters of, 268; courtship of male, 273; attracted by music, 269; male, small size of, 269 Spllosoma menthastri, rejected by turkeys, 320 Spine, alteration of, to suit the moth, Spiders, 102; erect attitude of man, 51 fondness of monkeys for, 223, of, in female development of, 226; in various species of Phasianidse, 230; of Gallinaceous birds, 358 360; development of, in female Gallinaceee, 443 Squilla, different colors of the sexes of a species of, 267 Squirrels, battles of male, 496; African, sexual differences in the coloring of, 529; black, 535 Stag, long hairs of the throat of, 517; horns of the, 222, 224; battles of, 497; horns of the, with numerous branches, ing of the, tive Sphlngidee, occurrence Spurs, fowls, 403 beetle, 521; 506; bellowcrest of the, 525 numerical proportion of sexes of, 249; large size of male, 276; weapons of the male, 296 Stainton, H T., on the numerical proportion of the sexes in the smaller moths, 247; habits of Elachista rufocinerea, 247; on the coloration of moths, 312; on the rejection of Spilosoma menthastri, by turkeys, 312; on the sexes of Agrotis exclamationis, 313 Bishop, fant Maories, Staley, mortality of in182 Stallion, mane of the, 517 Stallions, two, attacking a third, canine 98; fighting, 497; small teeth of, 510 Stansbury, Capt., observations on pelicans, 99 Staphylinidffi, hornlike processes in male, 296 Starfishes, parental feeling in, 102; bright colors of some, 257 Stark, Dr., on the death-rate in towns and rural districts, 135; on the influence of marriage on on the higher mortality, 136; mortality of males in Scotlajid, 238 Starling, American fleld-, pugnacity of male, 363 red-winged, selection of a , mate by the female, 410 Spots, retained throughout groups of birds, 421; disappearance of, Starlings, three, frequenting the same nest, 215, 404; new mates found by, 403 Statues, Greek, Egyptian, Assyrian, &c., contrasted, 576 Stature, dependence of, upon local influences, 30 Staudinger, Dr., on breeding Lepidoptera, 247; his list of Lepi- in adult mammals, 541 Sprengel, C K., on the sexuality Staunton, Spirits, Spiritual agencies, belief in, most universal, 9i al- Spiza cyanea and civis, 407 Spoonbill, 370; Chinese, change of plumage in, of plants, 455 208 Spring-boc, horns of the, 504 Sproat, Mr., on the extinction of savages in Vancouver Island, 178; on the eradication of facial hair by the natives of Vancouver Island, 575; on the eradication of the beard by the Indians of Vancouver Island, 598 doptera, 248 Sir G., hatred of decency a modern virtue, Stealing of bright objects In- 115 by birds, 408 Stebbing, T R on the nakedness of the human body, 694 Stemmatopus, 524 Stendhal, see Bombet Stenobothrus pratorum, stridulation, 283 ; INDEX Stephen, Mr L., on the difference In the mincls of men ana animals, 76; on general concepts in animals, 86; distinction between material and formal morality 107 Sterility, general, of sole ters, 132; when crossed, daugha dis- tinctive character of species, 162 under changed conditions, 184, mage Sulivan, Sir B J., on speaking of parrots, 83; on two stallions at- tacking a third, 497 Sumatra, compression of the nose by the Malays of, 577 Sumner, Archb., man alone capable of progressive improvement, 77 Sun-birds, nidifioation of, 448 Superstitions, 141; prevalence of, 118 186 Sterna, 665 seasonal change of pluin, 488 Stickle-back, polygamous, 216; male, courtship of the, 328; male, brilliant coloring of, during the breeding season, 337; nidMcation of the, 341 Sticks used as implements and weapons by monkeys, 79 Sting in bees, 204 Stokes, Capt., on the habits of the great bower-bird, 376 Stoliczka, Dr., on colors in snakes, 348 Stonechat, young of the, 483 Stone implements, diiHculty of making, 48; as traces of extinct tribes, 177 used by monkeys for breaking hard fruits and as mis- Stones, siles, 47; piles of, 175 Stork, black, sexual differences in the bronchi of the, 370; red beak of the, 487 Storks, 487, 489; sexual difference In the color of the eyes of, 419 Strange, Mr., on the satin bower bird, 376 Stretch, Mr., on the numerical proportion in the sexes of chickens, 242 Strepsiceros kudu, horns markings of, 508; of, 538 Stridulation, by males of Theridion, 270; of the Orthoptera and Homoptera discussed, 286; of beetles, 298 retained throughout Stripes, groups of birds, 421; disappearance of, in adult mammals, 541 Strix flammea, 403 Structure, existence of unserviceable modifications of, 59 Struggle for existence, in man, 138, Superstitious customs, 93 Superciliary ridge in man, Supernumerary quent 219; digits, men than in inheritance velopment of, 551, 553 more frewomen, in of, 227; early de- 232 Supra-condyloid foramen in the early progenitors of man, 156 Suspicion, prevalence of, among animals, 67 Swallow-tail butterfly, 309 Swallows deserting their young, 104, 110 Swan, black, wild, trachea of the, 369; white young of, 477; red beak of the, 487; black-necked, 489 Swans, 487, 489; young, 475 Swaysland, Mr., on the arrival of migratory birds, 208 Swifts, migration of, 104 Swinhoe, R., on the common rat in Formosa and China, 78; behavior of lizards when caught, 351; on the sounds produced by the male hoopoe, 371; on Dicrurus macrocercus and the spoonbill, 454; on the young of Ardeola, 463; on the habits of Turnix, 471; on the habits of RhynchEea bengalensis, 470; on Orioles breeding in mage, immature plu- 479 Sylvia atricapilla, young of, 482 cinerea, aerial love-dance of the male, 376 Sympathy, 131;' among animals, 99; its supposed basis, 103 Sympathies, gradual widening of, 109 Syngnathous fishes, pouch in male, 158 abdominal Sypheotides auritus, acuminated primaries of the male, 373; eartufts of, 379 142 Struthers, Dr., on the occurrence of the supra-condyloid foramen in the humerus of man, 21 Sturnella ludoviciana, pugnacity of the male, 363 Sturnus vulgaris, 403 Sub-species, 171 Suffering, in strangers, indifference of savages to, 114 Suicide, 133; formerly not regarded as a crime, 113; rarely practiced among the lowest savages, 114 Suidse, stripes of young, 458 Tabanidse, habits of, Tadorna variegata, young 204 sexes and of, 473 vulpanser, 409 Tahltians, 141; compression of the nose by the, 577 Tail, rudimentary, occurrence of, in man, 22; convoluted body in the extremity of the, 23; absence and the higher apes of, in man INDEX 666 56; In species of Macacus baboons, variability of, and In of, in the man, 156; itors of 56; early progenlength of, in pheasants, 439, 445, 446; difference the, length of in the two of sexes of birds, 445 the effects of Tait, Lawson, on natural selection on civilized na- presence tions, 130 Tanager, scarlet, variation in the male, sestiva, age of mature plurhage in, 478 rubra, 418; young of, 483 Tanais, absence of mouth in the 418 Tanagra males of some species 204; of, of the sexes in, 251; dimorphic males of a species of, Tench, proportions of the sexes in the, 245; brightness of male, during breeding season, 336 Tenebrionidse stridulation of, 299 Tennent, Sir J E., on the tusks of the Ceylon Elephant, 503, 510; on the frequent absence of beard in the natives of Ceylon, 555; on the Chinese opinion of the aspect of the Cingalese, 572 A., on the control of thought, 119 Tenthredinidffi, proportions of the sexes in, 250; fighting habits of male, 289; difference of the sexes in, 289 Tephrodornis, young of, 462 Tennyson, relations Terai, in India, 262 Termites, habits of, 288 Terns, white, 488; and black, 489 seasonal change of plumage Tankerville, Earl, on the battles of wild bulls, 497 Tanysiptera, races of, determined from adult males, 463 Sylvia, long tail-feathers of, 445 Taphroderes distortus, enlarged left mandible of the male, 274 Tapirs, longitudinal young, stripes • , in, gans of 152 the natives killed by of of, 166 Tasmanians, extinction of, 179 Taste, in the Quadrumana, 536 Tattooing, 174; universality of, of, 375; of, 400 449, 459, 465 tetrix, 449, 459, 465; pugnacity the male, 359 umbellus, pairing of, 363; battles of, 363; — male, major, male, 359 urophasianus, 244 Tea, fondness of monkeys for, Tear-sacks, of Ruminants, 525 Teebay, Mr., on changes of plumage in spangled Hamburgh fowls, 224 Teeth, rudimentary incisor, in Ruminants, 11; posterior molar, in man, 19; wisdom, 20; diversity of, 25; canine, in the early progenitors of man, 156: canine, of male mammals, 498; in man, reduced by correlation, 557; staining of the, 569; front, knocked filed by some savages, 569 Tegetmeier, Mr., on the transmission of colors in pigeons by one sex alone, 226; numerical proportion of male and female 240; on the births in dogs, abundance of male pigeons, 242; on the wattles of game-cocks, 398; on the courtship of fowls, 411; on the loves of pigeons, 412; on dyed pigeons, 412; blue dragon pigeons, S American ornament, herited, inflation of 368 Thamnobia, young of, 462 Thaumalea picta display of plumage by the male, 391 Thecla, sexual differences of coloring in species of, 307 rubi, protective coloring of, 308 Thecophora fovea, 305 Theognis, selection in mankind, 28 Theridion, stridulation of males — of, 270 lineatum, 269 Thomisus citreus, and T floricolens, difference of color in the sexes of, 268 Thompson, J H., on the battles of sperm-whales, 496 on the coloring of the W., male char during the breeding season, 337; on the pugnacity of the males of Gallinula chloropus, 357: on the finding of new mates by magpies, 402; on the finding of new mates by Pere402 Thorax, processes of, in male beetles, 292 570 Temper, of the the Eesophagus in the male, grine falcons, 440 drumming 371 urogalloides, dances of, 400 urogallus, pugnacity of the 569 Taylor, G., on Quiscalus Tembeta, 367 duration of dances scotlcus, Tasmania, half-castes out or of, phasianellus, dances male beetles, 273 Tarsius, 488 Terror, common action of, upon the lower animals and man, 67 Testudo elegans, 347 nigra, 346 Tetrao cupido, battles of, 363; sexual difference in the vocal or- 541 459, Tarsi, dilatation of front, in 177 in 67 dogs and horses, in- Thorell, T., on the proportion the sexes in spiders, 251 of INDEX Thornback, difeerence in the teeth of the two sexes of the, 331 Thoughts, control of, 119 Thrush, pairing with a blacltbird, and colors 409; the, nidifioation of of young, 459 Thug, remorse of a, 114 Thumb, absence of, in Ateles and Hylobates, 49 Thury, M., on the numerical proportion of male and female births among the Jews, 238 Thylacinus, possession of the marsupial sack by the male, 157 Thysanura, 277 Tibia, dilated, of the cribrarius, 273 male Crabro and femur, proportions of, in the Aymara Indians, 33 Tierra del Fuego, marriage-cus- toms of, 592 Tiger, colors and markings of the, 540 Tigers, depopulation of districts by, in India, 44 Tillus eloingatus, difference of color in the sexes of, 291 Timidity, variability of, in the same species, 67 Tincse, proportion of the sexes in, 245 pugnacity of male, 278 Tits, sexual difference of color in, Tipulffi, 451 Toads, 345; male, treatment of ova by some, 158; male, ready to breed before the female, 208 Todas, infanticide and proportion of sexes, 252; practice polyandry, 588; choice of husbands amongst, 588 Toe, great, condition human embryo, of In the 11 Tomious villosus, proportion of the sexes in, 250 Tomtit, blue, sexual difference of color in the, 451 Tonga Islands, beardlessness the natives of, 555, 575 Tooke, Home, Tools, flint, 141; of, 47 79; on language, of 83 used by monkeys, use Topknots in birds, 377 Tortoise, voice of the male, 561 Tortures, submitted to by Amer- ican savages, 115 Totanus, double moult in, 385 Toucans, colors and nidification of the, 449; beaks and ceres of the, 487 Towns, residence in, a cause of diminished stature, 30 Toynbee, J., on the external shell of the ear in man, 14 Trachea, convoluted and imbedded in the sternum, in some birds, 369; Rhynchaea, Trades, affecting the form of the skull, 54 Tragelaphus, sexual differences of color in, 530 scriptus, dorsal crest of, 526; markings 449 Thrushes, characters 449, 667 structure of the In 470 of, 538, 539 Tragopan, of 215; swelling the during of the male, courtship, 377; display of plu- wattles mage by the male, 391; markings 422 of the sexes of the, Tragops dispar, sexual difference in the color of, 347 Training, effect of, on the mental difference between the sexes of man, 560 Transfer of male characters to fe- male birds, 465 Transmission, equal, of ornamental characters, to both sexes in mammals, 537 Traps, avoidance of, by animals, 77; use of, 47 Treachery, to comrades, avoidance of, by savages, 107 Tremex columbse, 289 Tribes, extinct, 125; extinction of, 178 Trichius, difference of color in the sexes of a species of, 291 Trigla, 343 Trimen, R., on the proportion of the sexes in South African butterflies, 246; on the attraction of males by the female of Lasiocampa quercus, 248; on Pneumora, 284; on difference of color in the sexes of beetles, 291; on moths brilliantly colored be- 312; on mimicry in butter321; on Gynanisa Isis, and neath, flies, on the ooellated spots of Lepidoptera, 422; on Cyllo L,eda, 423 Tringa, sexes and young of, 480 canutus, 386 Triphffina, coloration of the species of, 310 Tristram, H B., on unhealthy districts in North Africa, 189; on the habits of the chaflinch in 244; on the birds of the Sahara, 450; on the animals inhabiting the Sahara, 485 Triton cristatus, 344 palmipes, 344 punctatus, 345 Troglodyte skulls, greater than those of modern Frenchmen, 53 Troglodytes vulgaris, 467 Trogons, colors and nidiflcation of Palestine, the, 449, 450 white only when mature, 488 freshwater fishes of the, Tropics, Tropio-birds, 399 Trout, proportion of the sexes in, 245; male, pugnacity of the, 328 Trox sabulosus, stridulation of, 300 668 INDEX Truth, not rare between members of the same tribe, 114; more highly appreciated by certain tribes, 118 Tulloch, Major, on the immunity of the negro from certain fevers, 189 Tumbler, almond, change of plu- mage in the, 233 Turdus merula, 449; young of, 487 migratorius, 459 musicus, 449 polyglottus, young of, 482 torquatus, 449 Turkey, wild, pugnacity of young male, 362; wild, notes of the, 370; swelling of the wattles of the male, 377; variety of, with a topknot, 379; recognition of a dog by a, 407; male, wild, acceptable to domesticated females, 418; wild, first advances made by older females, 414; wild, breasttuft of bristles of the, 455 Turkey-cock, scraping of the wings of, upon the ground, 371; wild, display of plumage by, 390; fighting habits of, 398 Turner, Prof W., on muscular fasciculi in man referable to the panniculus carnosus, 13; on the occurrence of the supra-condyforamen in the human humerus, 21; on muscles attached coccyx in man, 22; on the the to filum terminale in man, 22; on the variability of the muscles, tJ Ugliness, said to consist in an approach to the lower animals, 578 Umbrella-bird, 368 Umbrina, sounds produced by 343 United States, rate of increase in' 43; influence of natural selection on the progress of, 13S; change undergone by Europeans In the, Upupa epops, sounds produced by the male, 371 Uraniida?, coloration of the 311 Uria troile, variety of (equals U lacrymans), 418 Urodela, 344 Urostiote Benjamini, sexual differences in, 436 Use and disuse of parts, effects of, 31; influence of, on the races of man, 192 Uterus, reversion in the, 36; more or less divided, in the human subject, 37, 42; double, in the early progenitors of man, 156 loid 26; the on abnormal human velopment conditions of uterus, 37; on the deof the mammary glands, 157; on male fishes hatching ova in their mouths, 158, 341; on the external perpendicular fissure of the brain, 195; on the convolutions in the bridging brain of a chimpanzee, 196 Turnix sexes of some species of, 470, 474 Turtle-dove, cooing of the, 370 Tuttle, H., on the number of species of man, 170 Tylor, E B., on emotional cries, gestures, &o., of man, 82; on the origin of the belief in spiritual agencies, 91; remorse for violation of tribal usage in marrying, 112; on the primitive barbarism of civilized nations, 140; on the origin of counting, 140; inventions of savages, 141; on resemblances, of the mental characters in different races of man, 174 Type of structure, prevalence of, 159 Typhosus, stridulating organs 299; stridulation of, Twins, tendency hereditary, 44 of, of, 130 Island, Mr Sproat on the savages of, 178; natives of, eradication of facial hair by the, 575 Vanellus cristatus, wing tubercles of the male, 361 Vanessse, 305; resemblance of lower surface of, to bark of trees, 308 Variability, causes of, 27; In man, analogous to that in the lower animals, 28; of the races of man, 170; greater in men than in women, 218; period of, relation of the, to sexual selection, 235; of birds, 416; of secondary sexual characters in man, 554 Variation, laws of, 28; correlated, 41; in man, 142; analogous, 148; analogous, in plumage of birds, 380 Variations, spontaneous, 42 Varieties, absence of, between two species, evidence of their distinctness, 163 Variety, an object in nature, 488 Variola, communicable between man and the lower animals, human bones from, 22 Vaureal, Veddahs, monogamous habits of, 586 300 to Vaccination, influence Vancouver produce, on the aversion of Japanese ladies to whiskers, 675 Veitch, Mr., INDEX Vengeance, instinct Venus Erycina, Vermes, Vermiform appendage, of, 581 21 Verreaux, M., on the attraction of numerous males by tlie female of an Australian Bombyx, 248 caudal, number of, macaques and baboons, 56; monlieys, partly imbedded Vertebrae, the, 153; in of in 57 327; common origin of most ancient progeni- tors of, 156; origin of the voice In air-breathing, 561 Vesicula prostatica, the homologue of the uterus, 23, 157 Vibrissee, represented by long hairs in the eyebrows, Vidua, 397 18 456 axillaris, 215 Villerme, M., on the Influence of plenty upon stature 30 Vinson, Aug., courtship of male spider, 269; on the male of Bpeira nigra, 269 Viper, difference of the sexes in the, 347 Virey, on the of man, W of, 110 priestesses 261 the body, Vertebrata, 669 number of species 170 Virtues, originally social only, 113; gradual appreciation of, 128 Viscera, variability of, in man, 26 Vlaoovich, Prof., on the isohiopubic muscle, 40 Vocal music of birds, 364 organs of man, 85; of birds, 87, 444; of frogs, 346; of the Insessores, 366; difference of, in the sexes of birds, 367; primarily used in relation to the propagation of the species, 661 Vogt, Karl, on the origin of species, 1; on the origin of man, 3; on the semilunar fold in man, on microcephalous idiots, 34; on the imitative faculties of microcephalous idiots, 85; on skulls from Brazilian caves, 164; on the evolution of the races of man, 173; on the formation of the skull in women, 552; on the Ainos and negroes, 655; on the 17; increased cranial difference of the sexes in man with race development, 560; on the obliquity of the eye in the Chinese and Japanese, 572 Voice in mammals, 521; In monkeys and man, 563; In man, 661; origin of, in air-breathing vertebrates, 561 Von Baer, definition of advancement in the organic scale, 159 Vulpian, Prof., on the resembetween the brains of blance man and of the higher apes, Vultures, selection of a mate by the female, 410; colors of, 488 Waders, young of, 481 Wagner, R., on the occurrence of the diastema in a Kaffir skull, 39; on the bronchi of the black stork, 370 Wagtail, Ray's, arrival of the male before the female, 208 Wagtails, Indian, YO"ig of, 463 Waist, proportions of, in soldiers and sailors, 31 Waltz, Prof., on the number of species of man, 170; on the liability of negroes to tropiea.1 fevers after residence in a cold climate, 189; on the color of Australian infants, 553; on the beardlessness of negroes, 565; on the fondness of mankind for ornaments, 568; on negro ideas of female beauty, 573; on Javan and Cochin Chine'se ideas of beauty, 574 Walckenaer and Gervais, spider attracted by music, 270; on the Myriapoda, 271 Waldeyer, M., on the hermaph- roditism of the vertebrate embryo, 157 Wales, North, numerical proportion of male and female births in 237 Walker, Alex., on the large size of the hands of laborers' children, 32 F., on sexual differences in the diptera, 277 Wallace, Dr A., on the prehensile use of the tarsi in male moths, 205; on the rearing of the Ailanthus silkmoth, 247; on breeding Lepidoptera, 247; proportion of sexes of Bombjrx cynthia, B yamamai, and B Pernyi reared by, 249; on the development of , Bombyx cynthia and B yamamai, 276; on the pairing of Bombyx cynthia, 314 , man, on the origin of on the power of imitaman, 66; on the use of by the orang, 79; on the A R., 3; tion in missiles varying appreciation among of truth different tribes, 118; on the limits of natural selection in man, 47, 124; on the occurrence of remorse among savages, 128; on the effects of natural selection on civilized nations, 130; on the use of the convergence of the hair at the elbow in the orang, 147; on the contrast in the characters of the Malays and Papuans, 164; on the line of separation between the Papuans and Malays, 165; on the birds of paradise, 214; on the sexes of Ornithoptera Croesus 246; on protective resemblances, 670 INDEX on the relative sizes of the sexes of Insects, 276; on Elaphomyia, 277; on the pugnacity of the males of Leptorhynchus angustatus, 296; on sounds produced by Euchirus longima'nus, 301; on the colors of Diadema, 306; on Kallima, 308; on the protective coloring of moths, 310; on 258; bright coloration as protective in butterflies, 311; on variability in the Papilionidae, 316; on male and female butterflies inhabiting different stations, 317; on the protective nature of the dull coloring of female butterflies, 317, 318, 321; on mimicry in butterflies, 320; on the bright colors of caterpillars, 321; on brightlycolored fishes frequenting reefs, 339; on the coral snakes, 349; on Paradisea apoda, 380; on the display of plumage by male birds of paradise, 390; on assemblies of birds of paradise, 400; on the instability of the ooellated spots Hipparchia Janira, 422; on in sexually limited Inheritance, 438; coloration of on the sexual birds, 446, 466, 467, 469, 474; on the relation between the colors and nidiflcation of birds, 446, 449; on the coloration of the Cotingidas, 453; on the females of Paradisea apoda and papuana, 464; on the incubation of the cassowary, 472; on protective coloration in birds 485; on the Babirusa, 515; on the markings of the tiger, 540; on the beards of the Papuans, 555; on the hair of the Papuans, 569; on the distribution of hair on the human body, nictithe, 17; tating membrane In tusks of the, 498, 503; use of tKe tusks by the, 509 Walsh, B D., on the proportion of the sexes in Papillo Turnus, 254; on the CynipidEe and Cecidomyida?, 250; on the jaws of Ammophila on Corydalis 272; cornutus, 272; on the prehensile organs of male insects, 272; on the antennse of Penthe, 273; on the caudal appendages of drag274; on Platyphyllum concavum, 283; on the sexes of the Ephemeridce, 287; on the difference of color in the sexes of the, 475 Warblers, superb, nidiflcation of 448 Wariness, acquired by animals, 77 Warington, R., on the habits of the stickle-backs, 32S, "41; on the ' brilliant colors of the male stickle-back during the breeding season, 337 Wart-hog, tusks and pads of the, 515 Watchmakers, short-sighted, Waterhen, 356 Spectrum femoratum, 287; on sexes of aragon-flies, 288; on the difference of the sexes in the IchneumonidcP 289; on the sexes of Crsodacna atra, 291; on the variation of the horns of the male Phanaeus carnifex, 294; on the coloration of the species of Anthocharis, 309 32 Waterhouse, C O., on blind beetles, 291; on difference of color in the sexes of beetles, 291 G R., on the voice of Hylobates agilis, 562 Water-ouzel, 449; autumn song of , the, 365 Waterton, C, on the Bell-bird 384; on the pairing of a Canada goose with a Bernicle gander, 409; on hares fighting, 496 Wattles, disadvantageous to male birds in fighting, Weale, J 398 Mansel, on a South Af- rican caterpillar, 322 Wealth, infiuence of, 131 Weapons, used by man, 47; employed by monkeys, 79; offensive of males, 206; of mammals, 497 et seq Weaver-bird, 366 Weaver-birds, rattling of the wings of, 371; assemblies of, 400 Webb, 594 Walrus, development of the on-flies, Wapiti, battles of, 497; traces of horns in the female, 500; attacking a man, 606; crest of the male, 526; sexual difference in the color of the, 531 Warbler, hedge-, 467; young of Dr., on the wisdom teeth, 20 Wedderburn, Mr., black game, 401 assembly of Wedgwood, Hensleigh, on the ori- gin of language, 84 Weevils, sexual difference in length of snout in some, 204 Weir, Harrison, on the numerical proportion of the sexes in pigs and rabbits, 241; on the sexes of young pigeons, 242; on the songs of birds, 364; on pigeons, 406; on the dislike of blue pigeons to other colored varieties, 412; on the desertion of their mates by female pigeons, 412 J Jenner, on the nightingale and blackcap, 208; on the relative sexual maturity of male birds, 209; on female pigeons deserting a feeble mate, 210; on three starlings frequenting the same nest, 215; on the proportion of the sexes in Machetes pugnax and other birds, 242, 243; on the Trithe coloration of phsenae, 310; on the rejection of , INDEX certain caterpillars by birds, 322; tin sexual differences of the beak in the goldfinch, 356; on a piping 365; on the object of the nightingale's song, 3B4; on songbirds, 365; on the pugnacity of male flne-plumaged birds, 395; on the courtship of birds, 396; on the finding of new ma^s by Peregrine-falcons and Kestrels, 402; on the bullfinch and starling, 403; on the cause of birds remaining unpaired, 409; on starlings and parrots living In triplets, 404; on recognition of color by birds, 407; on hybrid birds, 409; on the selection of a greenfinch by a female canary, 410; on a case of rivalry of female bullfinches, 414; on the maturity of the golden-pheasant, bullfinch, 478 Weisbach, Dr., measurement of of different races, 163; on the greater variability of men than of women, 218; on the relative proportions of the body in the sexes of different races of men man, 654 Weismann, Prof., colors of Lycce- nsE, 309 Welcker, M., on braohycephaly and dolichocephaly, 54; on sexual differences in the skull in man, 552 Wells, Dr., on the immunity of colored races from certain poisons, 188 Westring, on the stridulation of males of Theridion, 270; on the stridulation of Reduvius personatus, 279; on the stridulation of beetles, 300; on the stridulation of Omaloplia brunnea, 300; on the stridulating organs of the Coleoptera, 301; on sounds produced by Cychrus, 301 Westropp, H M., on reason in a bear, 74; on the prevalence of certain forms of ornamentation, 175 Westwood, J O., on the classification of the Hymenoptera, 144; on the Culicidae and Tabanidas, 204; on a Hymenopterous parasite with a sedentary male, 217; on the proportions of the sexes in Lucanus cervus and Slagonium, 249; on the absence of ocelli in female mutillidffi, 272; on the jaws of Ammophila, 273; on the copulation of insects of distinct male of species, 272; on the Crabro cribrarius, 273; on the pugnacity of male Tipulae, 278; stridulation of Pirates stridulus, 281; on the Cicadse, 279; on the stridulating organs of the crickets, 281; on Ephippiger vitium, 282, 284; on Pneumora, 284; on the pugnacity of on the 671 the Mantides, 286; on Platyblemnus, 287; on difference in the sexes of the Agrionidse, 287; on the pugnacity of the males of a species of Tenthredin^, 289; on the pugnacity of the male stagbeetle, 297; on Bledius taurus and Slagonium, 296; on lamellicorn beetles, 298; on the colora- tion of Liithosia, 311 Whale, Sperm-, battles of male, 496 Whales, nakedness of, 54 Whately, Archb., language not peculiar to man, 82; on the primitive civilization of man, 140 Whewell, Prof., on maternal affection, 68 Whiskers, in monkeys, 146 White, P B., noise produced by Hylophila, 305 Gilbert, on the proportion of the sexes in the partridge, 243; on the house-cricket, 280; on the object of the song of birds, 364; on the finding of new mates by white owls, 403; on spring coveys of male partridges, 404 Whiteness, a sexual ornament in some birds, 490; of mammals inhabiting snowy countries, 537 White-throat, aerial love-dance of , the male, 376 Whitney, Prof., on the development of language, 83; language not indispensable for thought, 85 Widow-bird, polygamous, 214; breeding plumage of the male, 387, 397; female, rejecting the unadorned male, 413 Widows and widowers, mortality of, 136 Widgeon, pairing with a pintail duck, 409 Wilckens, Dr., on the modification of domestic animals in mountainous regions, 34; on a numerical relation between the hairs and excretory pores in sheep, 193 Wilder, Dr Burt, on the greater frequency digits in supernumerary of men than in women, 219 Williams, on the marriage-customs of the Pijians, 593 Wilson, Dr., on the conical heads of the natives of North- Western America, 577; on the Fijians, 577; on the persistence of the fashion of compressing the skull, 578 Wing-spurs, 443 Wings, differences of, in the two sexes of butterflies and Hymenoptera, 274; play of, in the courtship of birds, 395 Winter, change of color of mals in 637 Witchcraft, 93 mam- INDEX 672 Wives, traces of the forcible capture of, 140 Wolf, winter change of the, 537 Wolff, on the variability of the viscera in man, 26 WoUaston, T V., on thus, 274: idse, 301; Acalles, Wolves dogs, , Eurygnaon musical Curculionon the stridulation of 303 learning to bark from hunting in packs, 98 70; black, 535 Wombat, black varieties of the, Wyman, Prof., on the prolonsation of the coccyx in the human embryo, 11; on the condition of the great toe in the human embryo, 11; on the occurrence of the supra-oondyloid foramen in the humerus of man, 21; on variation in the skulls of the natives of the Sandwich Islands, 25; on the hatching of the eggs in the mouths and branchial cavities of male fishes, 158, 341 535 Women distinguished from men by male monkeys, 8; preponderance of, in numbers, 238; selection of, for beauty, 391; effects of selection of, in accordance different standards of beauty, 579; practice of capturing, 584, 587; early betrothals and with slavery of, 588; freedom of selection by, in savage tribes, 593 Wonder, manifestations of, by animals, Wonfor, ties in 69 Xenarchus, on the Cicadrs, 279 Xenophon, selection in mankind advocated by, 28 Xenorhynchus, sexual difference in the color of the eyes in, 419 Xiphophorus Hellerii, peculiar anal fin of the male, 334 Xylocopa, difference of the sexes in, 290 on sexual peculiarithe wings of butterflies, Mr.,_ 275 Wood, J., on muscular variations in man, 26, 40, 41; on the greater variability of the muscles in men than in women, 219 T W., on the coloring of the orange-tip butterfly, 310; on the habits of the Saturniidge, 312; quarrels of chamteleons, 353; on the habits of Menura Alberti, 366; on Tetrao cupido, 368; on the display of plumage by male pheasants, 391; on the ocellated spots of the Argus pheasant, 484; on the habits of the fe, male cassowary, 472 Woodcock, coloration of the, 486 Woodpecker, selection of a mate by the female, 410 Woodpeckers, 366; tapping of, 371; colors and nidiflcation of the, 449, 452, 485; 459, 468, 475 characters of young, Tarrell, W., on the habits of the Cyprinidffi, 245; on Raia clavata, 327; on the characters of the male salmon during the breeding season, 330, 366; on the char- acters of the rays, 327, 331; on the gemmeous dragonet, 333; on the spawning of the salmon, 341; on the incubation of the Lophobranchii, 342; on rivalry in song-birds, 364; on the trp.chea of the swan, 370; on the moulting of the Anatidae, 393; on the young of the waders, 481 Yellow fever, immunity of negroes and mulattoes from, 188 Touatt, Mr., on the development of the horns in cattle, 230 Tura-caras, their notions of beauty, 574 Woolner, Mr., observations on the ear in man, 15 Wormald, Mr., on the coloration of Hypopyra, 312 Wounds, healing of, Wren, 467; young of the, 475 Wright, C A., on the young of Orocetes and Petrocincla, 482 , Chauncey, power great brain- requisite for language, 47; on correlative acquisition, 565; on the enlargement of the brain in man, 604 Mr., on the Scotch deerhound, 512; on sexual preference in dogs, 519; on the rejection of a horse by a mare, 520 W von, on the protective plumage of the Ptarmigan, 385 , , Writing, 140 Zebra, rejection of an ass by a female, 535; stripes of the, 540 Zebus, humps of, 528 Zigzags, prevalence of, as ornaments, 176 Zincke, Mr., on European emigration to America, 138 Zootoca vivipara, sexual difference in the color of, 353 Zouteveen, Dr., polydactylism, 35; proportion of sexes at Cape Good Hope, 237; tracted by music, produced by spiders 270; fish, 343 of at- on sounds Zygaenidee, coloration of the, 311 ... species of Macacus, there are cous membrane of the olfactory region, as well as of the skin of the have, therefore, spoken in the text of the dark-colored races having a finer sense of smell than the. .. The power of erecting and directing the shell of the ears to the various points of the compass, is no doubt of the highest service to many animals, as they thus perceive the direction of danger;... that of a young child, the father compared the ear with the drawing which I have given" of the ear of a monkey, the Cynopithecus niger, and says that their outlines are closely simIf, in these