The little booklet contained a list of the necessary tools with their estimated costs, and said of the chemicals to be used, “The materials to be employed should be sufficiently pure. They may be had of dealers in chemical and pharmaceutical products, and it is well not to buy all the stuff from the same merchant, in order that he may not know what you wish to make....” It explained the relative forces of explosives in this way: “The relative force which the various explosives have is as follows: Shot-gun powder has a force of 1; an equal amount of ‘Panclastite’ has the force of 6; of dynamite 7; of dry gun-cotton 9 (if with 50% of salts of nitre, 5); of nitroglycerine 9; of fulminate of mercury 10 or 3½; of nitromannite 11.... All the other explosives of which we speak, such as melenite, etc., have nitroglycerine for their bases, therefore have no greater force than that of nitroglycerine.” After an exposition of the method of making nitroglycerine--the mere reading of which would make your hair bristle--the compilers conclude “... it is not very dangerous to use when cold, notwithstanding all that has been said. It would be a great work if some American manufacturer would devise some means of congealing it so that it would be less sensitive to shock, so that it might safely be carried on the railways.” Of fulminating cotton they remark, “As it ignites with instantaneous rapidity it is best to use a fuse that burns the most quickly; for example, when for use in bombs made to throw at a person, it will be enough to twist the cord, etc., etc.” Minute directions are given for the home-laboratory manufacture of the explosives listed, and the experimenter who cared to attempt their manufacture was warned in the simplest and most emphatic terms of the caprices of the different materials. He was told how to make cord-fuses that would burn at the rate of 8 hours to the yard, and of 6 hours to the yard; paper fuses which would reach the explosive two hours after a spark had touched the corner of a sheet of prepared paper; thread fuses which would sparkle fifteen seconds to the metre, or three minutes to the metre; and, finally, an instantaneous fuse which “Because it will burn with all the speed of electricity ... may be made to serve many important purposes: to fire a mine under a passing train, under gatherings, or troops of cavalry.”