This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1879 Excerpt: ...bisulphuret, cinnabar or vermilion. 3. Sil'ver.--A precious metal of a brilliant white color, next to gold the most malleable of all metals. It is found native in thin plates or leaves, or in fine threads, or mineralized by various substances. GOLD CLASS. 1. Gold.---A precious metal of a bright yellow color, and the most ductile and malleable of all the metals. It is found in beds of quartz, sandstone, etc., and also in many rivers, in minute and irregular grains. 2. Plat'inum.--A white metal, extremely ductile and malleable. It is the heaviest substance known, its specific gravity being 21.5. It is not affected by air, moisture, or any of the pure acids. It is found generally in small grains, combined with palladium, rhodium, iridium, and osmium. 3. Palla'dium.--A metal obtained in very small grains, of a steel-gray color and fibrous structure, found associated with platinum, or in auriferous sand. When native it is alloyed with a little platinum and iridium. It is ductile and very malleable, superior to wrought iron in hardness. 4. Rho'dium.--A metal discovered among the grains of crude platinum. It is of a whitish color, when pure is brittle, and requires a much higher temperature for its fusion than any other metal, unless perhaps iridium. It readily alloys with every other metal but mercury, and is insoluble in all acids. 5. Ruthe'nium.--A metal extracted from the ore of platinum. It is of a gray color, very hard and brittle. 6. Irid'ium.--A metal occurring only in the ore of platinum; it is the most refractory of all the metals, is brittle, and has a white color. No acid will attack it, but it oxidizes when ignited to redness in the air. 7i Os mium.--A rare metal, generally found in the ores of platinum. It is, in the most compact shape in which it ha...This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed.
|Title||:||A Popular Guide to the Terms of Art and Science|
|Author||:||C. Bankes Brookes|
|Publisher||:||Rarebooksclub.com - 2010-03|