To make the fulminating thundering powder.
Take three parts of salt-petre, two parts of salt of tarter, and one part of sulpher, pounded and mixed together, heat in a spoon sixty grains of this composition, and it will fly away with a fearful noise, like thunder, as loud as a cannon, breaking through the spoon and every thing underneath it, for it exerts itself downwards, contrary to the nature of gun-powder.
I have here set down, KIND READER, not only all usual feats, that either myself have seen or heard of, but divers others also, which I am sure were never in print, nor as yet performed by any I could ever hear of except myself, and all to give thee thy full content; and note this from me, if you rightly understand this, there is not a trick that any juggler in the world can shew thee, but thou shalt be able to conceive after what manner it is performed.