_Laboratorium Chymicum_, 80 _Lac Virginis_, 157 Lagrange, 116 Laplace, 172 Latent heat, 99, 172 Lauraquais, 155 Laurent, 168 Lavoisier, 20, 22, 109 antiphlogistic theory, 112, 116, 156, 164, 166, 173 Law of Dulong and Petit, 173, 174 Law of electrolytic action, 153 Lead, known to the ancients, 10 Leblanc, 108 Lehmann, 159 Lemery, Nicolas, 83, 154, 156 Leo Africanus, 36 Leukippos, 26 Libavius, Andreas (Libau), 62, 155, 157 Lieber, Thomas, 65 Liebig, 155, 156, 159, 164, 167 Löwiz, 156 Lucretius, 26, 27 Lully, Raymund, 41, 47, 49 Macquer, 98 Magistery, grand, 48 small, 48 _Magnesia alba_, nature of, 107 Manganese, discovery of, 107 Marggraf, 95, 107, 108, 157 Marie Ziglerin burnt, 53 Martian preparations, 37 Marriotte, 178 Maternus, Julius Firmicus, 35 Mayerne, Turquet de, 65 Mayow, John, 82 _et seq._ Medicine and Astrology, 58 _Melinum_, 13–14 Menethes Sibonita, 3 “Mercury,” as “element”, 31 Mercury, receipt for fixing, 50 Metallurgy of the ancients, 7 Metals of the phlogistians, 104 Minderer, Raymond, 157 _Minium_, 12 Mitscherlich, 159, 175, 176, 177 _Molybdena_, 12 Monge, 180 Monro, Donald, 159 Mordants, Egyptian, 15 Mundamus, 43 Mynsicht, Adrian van, 65, 158 Narcotine, 161 _Natron_, used as a detergent, 16 Natterer, 180 Nestis, god of water, 22 Neumann, 94, 175 _New System of Chemical Philosophy_, Dalton’s, 129 Nickel, discovery of, 107 Nitrogen, discovery of, 107 Northmore, 180 _Œrugo_, 12 Oil of wine, 155 _Okeanos_, 19 Oleus Borrichius, 33 Olimpiodorus, 35 _Onychitis_, 12 Operinus, 60 _Ostracitis_, 12 Oxides, metallic, used by ancients to colour glass 15 Oxygen, its discovery, 105 influence of, on chemistry, 105 Palissy, Bernard, 67 Paracelsus, 40, 48, 57 _Paratonium_, 13 Pelletier, 162 Peligot, 162 Peripatetic philosophy, influence on science, 24 Petit, Alexis Therese, 173, 175 Pherekides, 21 _Philosophia Orientalis_, 38 Philosopher’s Stone, 32, 46, 49 Philosophical egg, 33 Phlogistonism, 95 _et seq._ Phosphorus, discovery of, 80, 107 _Placitis_, 12 Platinum, discovery of, 107 Plato’s doctrine of “elements”, 23 Pliny, 156 _Plumbum album_, 10 _nigrum_, 10 Pope John XXII., alchemist, 46 Porret, 160 Pott, 94, 95, 159 Price, James of Guildford, 54 Priestley, Joseph, 20, 22 his life and work, 99 _et seq._ Proust, Joseph Louis, 121 Purple of Cassius, 81 _Purpurissum_, 13 Quintessence of philosophers, 32 Raquetaillade, Jean de, 43 Realgar, 13 Reaumur, 108 Rey, 110 Rhazes, 38 Richter, Jeremiah Benjamin, 124