the pile to be taken apart very quickly.

_Charging, Work, and Duration of the Pile._--The inventor has made a
large number of experiments with solutions of bichromate of potash of
various degrees of saturation, and has found the following to give the
best results:


Bichromate of potash. 1 kilogramme.
Sulphuric acid 2 liters.
Water 8 "


When a larger quantity of the salt is used, crystallization occurs in
the pile.

Constants and work Constants and work
of an element of a round Bunsen
having a zinc of element, 20×30 cm.
16×20 cm.

Volts. 1.9 1.8
Resistance. 0.05 0.24
Work disposable in the
external circuit. 1.839 k. 0.344 k.


The work disposable in the external circuit is deduced from the
formula: