th a battery composed of a gun-cap, with a strip of zinc, excited by a drop of water, the simple bulk of a tear.
A telegraph that will do that must be nearly perfect.
The principal galvanic batteries are known as, —
Bunsen battery.Gravity battery.
Callaud battery.Grove battery.
Carbon battery.Leclanche battery.
Daniell battery.Single-fluid battery.
Double-fluid battery.Smee battery.
Electropoion battery.Thermo-electric battery.
See Deschanel's Natural philosophy, Part III.
Appleton & Co.
A term applied by Fabre Palaprat to the application of platinum rendered incandescent by a galvanic current, as a cauterizing agent of the nature of a moxa.
A column of alternate plates, such as zinc and copper.
See voltaic pile.
The iron is cleaned by dilute acid and friction, is heated and plunged into a bath of melted zinc covered with sal-ammoniac, and is stirred about until the surface becomes alloyed
ance and habits of the peoples of the past.
What with domestic, decorative, and funereal urns and lachrymatories, there are but few nations, it would seem, but have left traces to help us to some conception of their tastes and their capacities.
The Metropolitan Museum of New York has a great collection, made by General Di Cesnola, United States Consul at Cyprus See the following works: Marryat's History of pottery and porcelain, London, 1857; Burty's Chefs-d'oeuvre of the Industrial Arts, Appleton & Co., 1869; Life of Josiah Wedgwood, London, 1865.
The earthenware of the Greeks and Romans was unglazed, but they covered their pottery with wax, tallow, bitumen, and perhaps other articles, to render them impervious to water, wine, etc. The Romans used molds for ornamenting clay vessels and for making figures of idols, or of limbs, plants, etc., for votive offerings.
The Peruvians use tallow, which is spread on while the ware is hot, and becomes partially carbonized.
The Etruscan wa