=CORONITE= was a coal-mine explosive of the Carbonite type, which was on the Permitted List at one time. It had also been called Permittite. Picric acid has been called by this name in Sweden. See also =KORONIT=. =COSILIT.=--A German coal-mine explosive of the Carbonite type made by Nahnsen. A published analysis gives its composition as-- Nitroglycerine 30 Sodium nitrate 22·3 Vegetable meal 40·5 Sodium chloride 7·2 =COTTON POWDER.= See =TONITE=, also =CP=. =CP_1= and =CP_2= are varieties of nitrocotton (Coton Poudre) made in France, principally for the manufacture of Poudre B and other smokeless powders. CP_1 is a guncotton containing about 13 per cent. of nitrogen, and only about 10 per cent. of matter soluble in ether-alcohol. CP_2 is almost completely soluble in ether-alcohol, and contains about 12 per cent. of nitrogen. =CRÉSYLITE.=--A French high explosive used for filling shell and other military purposes. Crésylite 60/40 consists of picric acid and nitrated cresol in about the proportions of 40 of the former to 60 of the latter. It melts below the temperature of boiling water. The nitrated cresol consists largely of trinitro-metacresol. Crésylite No. 2 is simply crude trinitro-meta-cresol. =CRONITE= is an American coal-mine explosive. There are two varieties on the Permissible List, Nos. 1 and 5, both of which are ammonium nitrate explosives. =*CRYSTAL= is a smokeless shot-gun powder made by Curtis’s and Harvey. It is a non-solvent powder for cheap loading, and the charge is thirty-three grains. =C.S.P.^2= (Chilworth Smokeless Powder, No. 2) is a modification of Cordite, containing a little sodium bicarbonate as a stabiliser. It is stated to have been adopted by the Brazilian navy (see “Engineering” for August 18, 1911, p. 237) and other powers. =CUGNITE.=--A French blasting explosive manufactured by the Société Française des Explosifs-- Nitroglycerine 27 Nitrocotton 0·7 Ammonium nitrate 30 Sodium nitrate 30 Wood meal 11 Barium sulphate 1·3 =CURTISITE.=--A coal-mine explosive of the Grisounite class made by Curtis’s and Harvey. It was formerly on the Permitted List-- Ammonium nitrate 88 Trinitro-toluene 8 Mononitro-naphthalene 4 =SUPER-CURTISITE= was a modification of the above to enable it to pass the Rotherham Test-- _Date of Permit_ 7-4-14 Ammonium nitrate 38·5 Potassium nitrate 29·5 Trinitro-toluene 10 Ammonium chloride 22 Limit charge 16 oz. Power (swing of ballistic pendulum) 2·71” The permit has been repealed. =DAHMENITE= is an ammonium nitrate explosive which has been used to a considerable extent in Germany. One variety known as Dahmenite A, made by De Gezamenlijke Buskruidmakers van Noord-Holland, was formerly on the British Permitted List for use in dangerous coal mines--