Horsley's apparatus, 248.
Hydro-extractors for wringing out gun-cotton, 62.
Impurities in commercial glycerine, 39, 233.
Impurities in fulminate, 240. nitro-glycerine, 38. picric acid, 231.
Ketones as solvents for pyroxyline, 101.
Kieselguhr dynamite, 112.
Kinetite, 145.
Kjeldahl method of determining nitrogen, 227.
Le Bouchet, manufacture of gun-cotton at, 78.
Lead cylinders for testing strength of explosives, 281.