Into the solution dips a silver plate wrapped in filter paper, and the current is passed from the silver plate as anode to the bowl as cathode.
In October 1868 a unique collection of ancient Augustan silver plate was discovered on the Galgenberg near Hildesheim by some soldiers who were throwing up earthworks.
Aurora is an important manufacturing centre; among its manufactures are railway cars - the shops of the Chicago, Burlington & Quincy railway being 927 here - flour and cotton, carriages, hardware specialties, corsets, suspenders, stoves and silver-plate.
A large quantity of silver-plate and goldsmiths' work of great value and considerable artistic elaboration was found in 1874 in the king's palace at Kumasi, not the least remarkable objects being masks of beaten gold.
The inner line of fortifications was razed in 1890, and the defensive works now consist only of the citadel and three detached forts, one of which, Fort Blucher, serves as a tete-de-pout on the left bank of the Rhine, Wesel contains some quaint old houses, and a town hall, dating from 1396, with an elaborate facade, and containing a valuable collection of old silver plate.