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 41
con-sisting in the porous cell, which is ofthick leather. Except, however, wherebatteries of a particular shape or sizeare required, for which earthen warecells cannot readily be obtained, thosepreviously described are preferred. 38. Fig. 16 represents a protecteabattery, in which the leather forms…
