... acquainted; as gold, iron, &c. 43. These elements are divided into metallic and non-metallic substances. The metallic substances are Po-tas´si-um, So´di-um, Cal´ci-um, Mag-ne´si-um, A- lu´min-um, ... respiration. Animals consume the oxygen of the atmosphere, and give off carbonic acid; while plants take up the carbonic acid, and restore to animals the oxygen, thus affording an admirable example ... I´ron, Man´ga-nese, and Cop´per. The non-metallic substances are Ox´y-gen, Hy´dro-gen, Car´bon, Ni´tro-gen, Si-li´-ci-um, Phos´phor-us, Sul´phur, Chlo´rine, and a few others. 44. POTASH (potassium...