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 78
ry used for gilding and silveringconsists of from three to six or eight pairs, accordingto the extent of surface to be covered, and the resist-ance offered by the solution. As the solutions growolder, they require less power to decompose them ibut there is then a greater tendency to the… … to be evolved, instead of entering into a new com-bination. It is on this account that several pairshave no more efficiency in decomposing the solu-tion than one pair where the positive pole is dis-solved. The object of the present arrangement is6 62 DAVISS MANUAL. to bring the whole action more…
