Dynamite

which has a_ reddish: brown color, consists of 1 part of kieselguhr to 3 parts of nitroglycerin and has a specific gravity varying from 1.59 to 1.65. It burns with a yellow: ish flame, and in small quantities with: out danger; but explodes with great violence when fired by a detonating fuse. The time of explosion of 3 dynamite cartridge has been calculated to occupy only the 24,000th part of second; a fact which explains the vio: lent nature of its action. Under wate! it loses only 6 per cent. of its powet. and is consequently greatly in requisition for subaqueous operations.