Endless Amusement&#13;A Collection of Nearly 400 Entertaining Experiments in Various Branches of Science; Including Acoustics, Electricity, Magnetism, Arithmetic, Hydraulics, Mechanics, Chemistry, Hydrostatics, Optics; Wonders of the Air-Pump; All the Popular Tricks and Changes of the Cards, &amp;c., &amp;c. to Which is Added, a Complete System of Pyrotechny; Or, the Art of Making Fire-works. by Unknown
 is a Project Gutenberg book, now on Github.