INDEX 



487 



Sabatier on catalysis, 202 



Saccharin, 69, 338 



Safflower, 330 



Salt deposits, 182 



Salt explained, 328 



Salvarsan, 339 



Schonherr electric furnace, 407 



Semipermeable membranes, 52, 173 



Serpek process, 398 



Silica ware, 100 



Silk, artificial, 358, 361 



Sodium, 260 



Solomon redivivus, 461 



Sols of metals, 236 



Solutions, 170 



Spectroscope, 98 



Spinthariscope, 145 



Spirits, 65 



Sprengel's pump, 92 



Steel, 263 



Stereo-chemistry, 213 



Strutt on active nitrogen, 121 



Strychnine, 341 



Substantive dyes, 327 



Sugar, 411 



duty on, 69 

 Sulphonal, 337 

 Surface combustion, 209 

 Synthesis from elements, 334 



Tea, 70 



Terpenes, 344, 356 

 Terpineol, 351 

 Theobromine, 338 

 Thomson, biographic notice, 481 

 Thomson, J. J., on electric discharge, 

 114 



on positive rays, 119 

 Thorium, disintegration of, 156 

 Thorpe on atomic weight of radium, 



147 



Thrombin, 452 



Timiriazeff on chlorophyll, 458 

 Titanium in steel, 266 



Tobacco, 68 

 Topler's pump, 94 

 Toxins, 453 

 Trinitrotoluene, 386 

 Trypsin, 451 

 Tryptophane, 437 

 Tungsten in steel, 266 

 Turacin, 441 

 Tyrian purple, 326 



Ultramicroscope, 231 

 Urea, synthesis of, 333 

 Uric acid, 338 



Vacuum by charcoal, 95 



Vacuum vessel, 89 



Valency, 190, 213, 223 



Van't Hoff, 105, 214 



Vanadium in steel, 266 



Vanillin, 342 



Veronal, 337 



Viscose, 358 



Vital force, 456 



Volker Lighting Corporation, 275 



Water, Purification of, 254 

 Wax of seals, 73 

 Welsbach mantles, 274 

 Werner's theory of valency, 192, 221 

 Willesden paper, 358 

 Williamson's theory of atomic ex- 

 change, 187 

 Wine, 67 



Wislicenus, 105, 214 

 Wollaston on atoms in space, 213 

 Writing ink, 73 

 Wurtz's Chemical Theory, 103 



Xanthophyll, 444 



Yeast, 48, 50, 52, 423, 448 



Zymase, 49, 452 



