NICKEL is a white brilliant metal, which acts upon the magnetic needle, an itself capable of becoming a magnet. Its magnetism is more feeble than that of iron, and vanishes at a heat somewhat below redness, 630°, (Faraiday.) It is ductile and malleable. Its specific gravity varies from 827 to 840 when fused, and after hammering, from 8.69 to 9.00. It is not oxidized by exposure to air at common temperatures, but when heated in the air it acquires various tints like stool; at a rod-heat it becomes coated by a grey oxide. (Brande, 802)

Nickel is scarcely used in the simple state; Mr. Brande mentions, how-ever, that ho has seen a Bavarian coin that had been struck in it; but it is principally used together with copper and zinc, in alloys that are rendered the harder and whiter the more nickel they contain; they are known under the names of albats, British plate, electrum, German silver, pakfong, teutanag, &c: the proportions differ much according to price; thus the

Commonest are 8 to 4 parts Nickel, 20 copper, and 16 zinc.

Best . are 5 to 6 parts Nickel, 20 copper, and 8 to 10 zine.

About two-thirds of this metal is used for articles resembling plated goods, and some of which are also plated, see silver; the remainder is employed for harness, furniture, drawing and mathematical instruments, spectacles, the tongues for accordions, and numerous other small works.

The white copper of the Chinese, which is the same as the German silver of the present day, is composed, according to the analysis of Dr. Fyfe, of 81.0 parts of nickel, 40.4 of copper, 25.4 of zinc, and 2.6 of iron,

17.48- 68.89 - 13.0-. Frick's Imitative Silver.

The white copper manufactured at Sutil in the duchy of Saxe Hildburg-hausen, is said by Keferstein, to consist of copper 88000, nickel 8.753, sulphur with a little antimony 0.750, silex, clay, and iron, 1.75. The iron is considered to be accidentally introduced into these several alloys, along with the nickel, and a minute quantity is not prejudicial

Iron and steel have been alloyed with nickel; the former, (the same as the meteoric iron which always contains nickel,) is little disposed to rust: whereas the alloy of steel with nickel, is worse in that respect than steel not alloyed.