How? or, Spare hours made profitable for boys and girls (1887)
Holbrook, Kennedy · New York, Worthington co. · leaf 281
electricity, consists of two parts ; first, acake or disk of resin, or of shellac and wax, these sub-stances being melted and poured into a tin mold ; second,a disk of brass, or sometimes of thin, well-dried wood,covered on each side with thin sheet-brass or even thicktin-foil. This should be… … fox-tail. The disk is then taken by the handle and restedon the cake, and its upper surface touched a momentwith the finger; then, on withdrawing the disk from the THE ELECTROPHORVS. 277 resin, a bright electric spark can be obtained from it. By-resting it once more on the resin, again touching…
Handicraft · Amusements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
