Radium, atomic weight of, 58 discovery of, 55 disintegration of, 58 emanation, 58 extraction of, 55 Radium chloride, 57 Ramsay, Sir William, 44, 47, 173 Raoult, 72, 178 Rayleigh, Lord, 44, 81 Regnault, 43, 79, 88, 157 Reich, 36 Reimann, 135 Richards, Theodore, 77 Richter, 36 Rodger, 184 Roosen, 157 Roozeboom, 184 Rosaniline, 4 Roscoe, 21, 30, 117, 185 Rose, 26 Rotatory power, 144 Rubidium, 21, 34 Runge, 133 Rutherford, 59 Salicylic acid, 162 Salmine, 168 Samarium, 40 Sarcine, 157 Sarcolactic acid, 140 Saturated solutions, 174 Saussure, 43 Scandium, 37, 107 Scheele, 33, 140, 185 Schiff, 172 Schischkoff, 21 Schmidt, 83 Schmiedeberg, 161 Scott, 80 Selmi, 161 Senebier, 185 Sesquiterpenes, 129 Silbermann, 183 Silicon, specific heat of, 71 Skraup, 133 Solute, 175 influence of, on boiling-point, 71 on freezing-point, 71 on vapour pressure, 73 Sonstadt, 153 Soret, 70 Spectrum analysis, 21 Stas, 75 Steric hindrance, 151 Stovaïne, 160 Strecker, 102, 158, 161 Sugars, 165 Sulphonal, 159 Supersaturated solutions, 174 Tait, 70 Tautomerism, 149 Terebenthene, 130 Terpenes, 129 Tetanine, 161 Tetronal, 159 Thallium, 35 Thebaine, 137 Thénard, 43 Theobromine, 157 Thioacetic acid, 127 Thomsen, Julius, 51, 108, 183 Thomson, Sir J. J., 184 Thomson, Thomas, 3 Thorium, 60 Thorpe, 172, 184 Thulium, 38 Thyreoglobulin, 169 Tiemann, 129, 132 Traube, 176 Travers, 50 Trional, 159 Triphenylrosaniline, 4 Troost, 184 Turner, Edward, 2, 14, 75 Turpentine, oil of, 129 Tutton, 184 Type theory, 18 Typhotoxine, 161 Unverdorben, 3 Uranium, 54 Uranium │x│, 54 Urbain, 40 Urea, synthesis of, 157, 158 Uric acid, 158 Valency, 112 Vanadium, 30 Van der Waals, 95, 184 Van Dorp, 133 Vanillin, 132, 162 Van ’t Hoff, 117, 141, 145, 147, 173, 177 Veronal, 159 Verquin, 4 Victorium, 40 “Vital force” doctrine, 169 Vogel, 185 Von Miller, 134 Waage, 183 Wallach, 129 Warburg, 46 Waterston, 83 Weber, 71 Weisbach, 37 Welsbach, Auer von, 38 Werner, 147 Williamson, Alexander W., 14, 16, 113 Winkler, 107 Wintergreen, oil of, 132 Wislicenus, 140 Wöhler, Friedrich, 5, 7 Wollaston, 63 Wroblewski, 96 Wurtz, 153 Xanthine, 157 Xenon, 43, 51 Zein, 169 Zinin, 3 A History of the Sciences