Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 261
as the electricity supplied by a single pairof plates is of too low intensity to be transmitted, toany considerable extent, by so poor a conductor asthe human body. Professor Henry was the first toemploy coils of metallic ribbon for obtaining sparksand shocks from a single pair of plates. 388.… … in connection with a ribbon spiral and a single pairof Groves battery. It consists essentially of a bentcopper wire, which, by means of clock-work set inmotion by a spring, is made to vibrate rapidly, dip-ping its ends alternately into two glass cups, intended\o contain mercury. The spring is wound…
