ON THE MANUFACTURE OF GUNPOWDER. 7 SALTPETRE, OR NITRE. 7 OLD METHOD. 7 NEW METHOD. 8 CHARCOAL. 9 SULPHUR. 11 PULVERIZING THE INGREDIENTS. 11 MIXING THE INGREDIENTS. 12 THE INCORPORATING MILL. 12 INCORPORATING THE INGREDIENTS. 13 BREAKING DOWN THE MILL CAKE. 14 PRESSING THE MEAL BY THE HYDRAULIC PRESS. 14 GRANULATING THE PRESS CAKE. 15 DUSTING LARGE-GRAIN POWDER. 16 DUSTING FINE-GRAIN POWDER. 17 GLAZING FINE-GRAIN POWDER. 17 STOVING OR DRYING POWDER. 17 FINISHING DUSTING. 17 EXAMINATION AND PROOF OF GUNPOWDER. 18 PROOF OF MERCHANT’S POWDER. 18 REMARKS ON THE PROOF OF POWDER BY THE EPROUVETTES. 19 OF THE SIZE OF GRAIN FOR GUNPOWDER. 19 OBSERVATIONS ON THE MANUFACTURE OF GUNPOWDER ON THE CONTINENT AND AMERICA. 20 PRODUCTION AND PURIFICATION OF THE INGREDIENTS. 20 PULVERIZING AND MIXING THE INGREDIENTS. 20 INCORPORATING PROCESS. 21 GRANULATING. 21 STOVING OR DRYING. 21 NEW RIFLE POWDER. 22 ON MAGAZINES. 23 LIGHTNING CONDUCTORS. 24 ON THE EXPLOSIVE FORCE OF GUNPOWDER. 29 FOULING. 35 EFFECTS OF GUNPOWDER ON METALS. 35 MISCELLANEOUS EXPERIMENTS. 36 ON THE TIME REQUIRED FOR IGNITION OF GUNPOWDER. 38 EFFECTS OF ACCIDENTAL EXPLOSIONS OF GUNPOWDER. 38