Ammon-=SCHLESIT= or Kohlen-=SCHLESIT= is a German coal-mine explosive containing ammonium nitrate and other nitrates, nitro-compounds, starch, neutral salts, not more than 4 per cent. of blasting gelatine, and not more than 2 per cent. of potassium perchlorate. =SCHNEIDERITE= is a high explosive used by the French for filling shell. Its composition is the same as the Favier explosive N_1 c. =*SCHULTZE POWDER= was the first successful smokeless powder made. It was invented by Capt. E. Schultze of the Prussian Artillery, who appears at first simply to have impregnated little grains of wood with saltpetre (Eng. Pat. 900 of 1864). But later the wood cellulose was purified and nitrated, and then mixed with nitrates. The powder has remained the same as this until the present day, although the methods of manufacture have been developed and, indeed, revolutionised more than once. In “Arms and Explosives,” 1917, p. 75, the following analyses of different brands were given-- Sawdust. Schultze. Imperial. Cube. Lightning. _Date introduced_ 1869 1883 1902 1908 1913 _Charge for_ 42 42 33 30 33 _12-bore grns._ Fibrous. Fibrous. Fibrous. Gelatinised. Fibrous. Nitrocellulose, insoluble} 25·0 63·7 62·1 55·0 ” soluble} 64·8 40·0 18·9 27·0 27·0 Metallic nitrates 33·0 29·0 8·0 5·0 11·2 Vaseline -- 4·0 7·6 4·0 5·0 Moisture 2·2 2·0 1·8 1·9 1·8 The nitrocellulose in all cases has been made from wood cellulose. All the powders are of the bulk type. Schultze powder is also made in America as a 36-grain fibrous bulk powder-- Nitrocellulose, insoluble 4·9 ” soluble 78·5 Metallic nitrates 10·5 Vaseline 3·7 Moisture 2·4 =SEAMEX= is a coal-mine explosive on the Permitted List made by Explosives and Chemical Products, Ltd.-- Nitroglycerine 10 Ammonium nitrate 58 Wheat flour 20 Sodium chloride 12 Limit charge 36 oz. Power (swing of ballistic pendulum) 2.54” =SEBOMITE= is a French chlorate explosive resembling Cheddite, but containing tallow instead of castor oil. =SECURITE= was one of the first coal-mine explosives. It contained ammonium nitrate and dinitro-benzene, and was therefore similar to Bellite and Roburite. =SECUROPHORE.=--A Belgian coal-mine explosive containing nitroglycerine, nitrates, flour and other constituents.