In the Track of the Troops

(Excerpt): “After becoming acquainted with gun-cotton, nitro-glycerine, dynamite, lithofracteur, and other combinations of powerfully-explosive agents, I took to searching for and inventing methods by which these might be utilised. To turn everything to good account, is a desire which I cannot resist. Explosives naturally drew my attention to mines—tin-mines, coal-mines, and other commercial ente...