_Cerussa_, 10 _usta_, 12 _Chalcantum_ (copper sulphate), 12 Charles, 178 Chalybes, smelters of iron, 11 Chemistry of the ancients, 1 Chenevix, 157 Chevreul, 54, 162 Chlorine, discovery of, 107 Chromium, discovery of, 120 _Chrysocolla_, 12 Cinnabar, use as pigment, 13 Clouet, 180 Clytemius, John, 54 Cobalt, discovered by Brandt, 107 Combining proportion, 129 Conservation of matter, 113 Conringius, Hermann, 51 Copper, Egyptian, 8 Roman, 9 Cordus Valerius, 69 Crawford, 107, 172 Croll, Oswald, 65 Cronstedt, 107 Cyanogen, discovery of, 151 Dalton, 125 _et seq._, 178, 181 Davy, 29, 141 Dee, John, 53 Delambre, 116 Demokritos, 26 _De Re Metallica_, 66 Derosne, 157 Dickinson, 50 Diodorus Siculus, 7 Dioscorides, 156, 160 Döbereiner, 155, 162, 167 Dorn, 60 Duchesne, 61 Duhamel, 98, 157 Dumas, 162, 167, 168, 181 Dulong, 158, 173, 174 Dyeing by the Egyptians, 14 Egypt, birthplace of chemistry, 1 _Electrum_, 8 _Elementa Chemia_, 87 “Elements,” Aristotelian, qualities of, 23 _Elephantinum_, 14 Elixir, 32 Eller, 94 Empedokles, 23 Erastius, Thomas, 51 Equivalent, 129 _Fæx vini_, 137 Fischer, G. E., 124 Flos æris, 12 Fourcroy, 112, 118, 155, 158, 161, 162 Frankland, 168 Gahn, 108 _Gas sylvestre_, 63 Gay Lussac, 150, 155, 161, 164, 167, 178, 181 Geber, 36 theory of metals, 37, 156 Generation of metals, 33 Geoffroy, 106 Gerhardt, 168 Glass, known to the ancients, 15 Glauber, Johann Rudolf, 68 Glucinum, its discovery, 120 Gmelin, L. 161 Gold, extraction by ancients, 7 Goulard, 157 Gomes, 161 Göttling, 156 Graham, Thomas, 178 Gresham College, 74 Gualdo, 49 Guyton de Morveau, 112, 160 _Hæmatinon_, 15 Hales, Stephen, 89 “Harmonics,” Paracelsian, 61 Hauy, 176 Hellot, 108 Helmont, John Baptist van, 63 Helvetius, 48 Hennel, 155 Henry, 181 Herakleitos, 21 Here, god of air, 22 Hermbstädt, 158 Hermes Trismegistus, 4, 33 “Hermes of Germany, the”, 52 Hoffmann, 106 Homberg, William, 84 Houton-Labillardière, 158 Howard, 161 _Hyalos_, use of, for kindling fire, 15 _Hydrargyrum_, 11 Iatro-chemistry, 57 Ink of the ancients, 14 Ingenhousz, 21 Invisible College, the, 74 Iron, use of, by the ancients, 10 Irvine, 172 Isaac of Holland, 49 Isomerism, 165 Isomorphism, discovery of, 176 “Kalid,” his philosopher’s stone, 48 _Key of Wisdom_, 53 Kircher, 51 Kirchhoff, 162 Kirwan, 113 Klaproth, 120, 160 Klettenberg, Hector de, 54 Kopp, 181 Krohnemann, William de, 53 Kunkel, John, 51, 79