SALOON. 
47 
include various crystalline and other forms, among 
which are the pseudomorphous crystals of carbo- Nat. Hist. 
nate of zinc, derived from modifications of calca¬ 
reous spar. 
(Case 45.) Ores of tin, of which we have the 
sulphuret of tin, or tin pyrites, and the oxides, 
which are divided into common tin stone, and 
wood tin:— tin pyrites, hitherto only found in 
Cornwall, nearly pure, mixed with copper py¬ 
rites, &c. ;—among the specimens of common tin 
stone are, the regular and macled crystals, the 
aggregations of acicular crystals called needle tin 
the massive, the pebble like, and granular tin 
stone (shoad tin, stream tin, grain tin, &c.); and 
among the varieties of colour, the greyish white 
crystals, resembling scheel-ore, or tungstate of 
lime.—The ores of tungsten, which generally ac¬ 
company those of tin, are— wolfram (scheelin fer- 
rugineux Hauy}, crystallized and massive, from 
Bohemia, Cornwall, &c. ; and the tungstate of 
Time, scheel ore (scheelin calcaire Hally), among 
the crystallized specimens of which is the primi¬ 
tive acute octohedron from Allemont in Dauphine. 
—In this case are also placed the specimens of 
molybdena, or sulphuret of molybdenum, which 
should not be confounded with graphite : the yel¬ 
low powder on feldspar, from Westmania in Swe¬ 
den, is oxide of molybdenum . 
(Case 46.) Part of this case is occupied by the 
ores of titanium, viz, the oxides, called titanite, 
hr oxen- ore, 
1 
