roperties of dynamite, 116.
gelatine compounds, 130.

Pulping gun-cotton, 65.

Pyroxyline for celluloid, 96.
solvents for, 101.

Quinan's foot-pound machine, 280.

Raoult's law and N.G., 21.

Reworked gun-cotton, 78.

Rhenish dynamite, 119.

Roburite, properties and manufacture of, 138.
Bedson's report on, 140.
Orsman on gases produced by explosion of, 142.

Romit, 148.

Sarrau and Vieille, gases obtained from ignition of dynamite, 19.

Sayers, 50.

Scheme for analysis of explosives, 213.

Schultze's powder, 183.

Schultze-Tieman method of determining nitrogen, 224.

Securite, 144.

Separation of nitro-glycerine from mixed acids, 35.

Shimose, 156.

Silver test for glycerine, 233.

Smokeless powders, 168.

Smokeless diamond, 190.

Snyder's powder, 193.

Sobrero discovered nitro-glycerine, 14.

Sodium nitrate, analysis of, 239.

Soluble and insoluble nitro-cellulose, 51.

Solubility of nitro-glycerine, 20.

Solvents for soluble gun-cotton, 52, 101.

Solubility test for gun-cotton, 214.

Specific gravity of explosives, 270.

Sprengel's explosives, 151.

Stowmarket, manufacture of gun-cotton at, 57.

Sulphuric acid, determination of strength of, 24.

Sy on test for nitro-cellulose, 269.

Temperature of nitration of nitro-glycerine, 29.

Thomson's patents, 73.

Toluene, 146.

Tonite, 84, 146.
analysis of, 205.
fumes from, 85.

Treatment of waste acids, 43.

Trench's fire-extinguishing compound, 88.

Trebouillet and De Besancele on celluloid manufacture, 92.

Tri-nitro-cresol, 158.

Tri-nitro-toluene, 146.

Tri-nitro-phenol, 152.

Tri-nitro-glycerine, 2, 14.

Troisdorf powder, 191, 192.

Turpin's melinite, 156.

U.S. naval powder, 180.

Uses of celluloid, 91, 93, 102.

Uses of collodion-cotton, 90.

Vaseline, 208.

Vielle poudre, 190.

Volney's powder, 148.

Von Foster's powder, 191.

Walsrode powder, 188.

W.A. powder, 182.

Waltham Abbey, manufacture of gun-cotton at, 71.
manufacture of cordite at, 169.

Walke's pressure gauge results, 289.

War Office experiments with cordite, 173.

Washing gun-cotton, 63.
nitro-glycerine, 37.

Waste acids from nitro-glycerine, 41, 226.

Weltern powder, 191.

Werner & Pfleiderer's mixing machine, 124.

Whirling out the acids from gun-cotton, 62.

Will's test for nitre-cellulose, 261.

Wood pulp, 126.

Xylonite Company's process, 96.

Zen