30 
SALOON. 
Nat. Hist, 
of mica or glimmer, may be specified those that ex¬ 
hibit perfectly transparent crystals; the beautiful 
red and yellow varieties, together with those of a 
metallic lustre: diverging-radiated mica, &c.— 
Pinite (micarelle of Kirwan).— Lepidolite; with 
which is placed a specimen of what is considered 
as compact lepidolite.—Intermediate between mica 
and talc, is the chlorite^ among the varieties of 
which are the earthy, common, foliated, and the 
slaty: the last of these, with octohedral magnetic 
ironstone, bitter spar, &c.—Of talc we have the 
common or Venetian, which enters the composi¬ 
tion of cosmetics, and the indurated talc: to the 
former of these may also be referred the beautiful 
green variety from Siberia, composed of distinct 
groups of small diverging-radiated laminae.— Pot- 
stone or ollite, the lapis comensis of the ancients, 
from Como.in the Milanese, where it is turned on 
the lathe into most durable culinary vessels.—In 
this case is also placed a substance from New York, 
which has very much the appearance of white lami¬ 
nar talc, but is a hydrate of magnesia. 
(Case 18.) contains steatitic substances.— No» 
hie seipentine, which, in combination with primi¬ 
tive limestone, constitutes the marmo verde antico; 
common serpentine, among the varieties of which 
are best known those from Bareuth and from Zbb- 
iitz in Saxony, where they are manufactured into 
vases and various other aiticles; serpentine with 
' garnets. 
