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BISMUTH, ANTIMONY, ARSENIC, ETC. 
Case Gr. — Specimens of stibnite^ the universal antimony ore, 
from various localities in Japan, California, New South Wales and 
Greece. Th^t from Greece bears an appreciable percentage of 
gold. 
Ingot antimony and products of smelting stibnite. Bismuth 
ores; cobalt ore, asbolan ; arsenic ore, leucopyrite. Ores of 
Molybdenum and Uranium. 
NICKEL. 
Case I. — A complete series showing ores of nickel, processes 
of extraction and applications of the metal, presented by the 
American Nickel Works of Camden, N. J. Note as the principal 
ores, the bronze colored sulphide, pyrrhotite^ the brass colored 
sulphide, frequently in capilliary forms, millerite, and the apple 
green silicate, garnierite. 
Nickel ores from Canada, Oregon and New Granada. A chart 
near by gives the process of extension of nickel from the Cana- 
dian pyrrhotite. As uses of the metal, are shown specimens 
of plating, nickel steel alloy; for armor, salts of use in the arts, 
etc. 
ALUMINUn. 
Case I. — Ores and products of aluminum. Though alu- 
minum is the metal contained in common clay, efforts to extract it 
cheaply from this substance have so far failed. 
The ores from which it is obtained — bauxite and cryolite—* 
are shown in the case, together with sheets of the metal and speci- 
mens of its alloys. 
