S9 
with octahedral magnetic ironstone, bitterspar, saloon. 
&c.—Of talc we have the common or Venetian nat. Hist. 
(which enters the composition 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.— Fotstone, 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 laminar 
talc, but is a hydrate of magnesia. 
Case 18 contains steatitic substances.— -Noble 
serpentine^ which, in combination with primitive 
limestone, constitutes the marmo verde antico • 
common serpentine^ among the varieties of which 
are best known those from Bareuth and from Zob- 
litz in Saxony, where they are manufactured into 
vases and various other articles; serpentine with 
garnets, magnetic ironstone,asbest, slaty talc, &c. 
—Triclasiteoxfahlunitefxom Sweden and Green¬ 
land.—Varieties of5/^<2/^Y^,among which the most 
remarkable are, that of a yellowish green colour 
from Greenland, and that from Gopfersgriin in 
Bareuth, with small crystals of other mineral sub¬ 
stances, converted into, and forming part of, the 
massive steatite.—To these are added some sub¬ 
stances which are allied to the preceding, though 
differing from them with regard to their chemical 
composition; such as the agalmatolite of Klaproth 
(bildstein 
