31 
garnets, magnetic ironstone, asbest, slaty talc, &c. saloon. 
—Varieties of steatite^ among which the most re- 
markable are those from Cornwall, that of a yel¬ 
lowish green colour from Greenland, that from 
Gdpfersgriin in Bareuth, with small crystals of other 
mineral substances, converted into, and forming 
part of, the massive steatite.—To these are added 
some substances which are allied to the preceding, 
though different from them with regard to their 
chemical composition; such as the agalmatolite 
of Klaproth (bildstein of Werner, talc glaphique 
of Haiiy), employed by the Chinese for carving ^ 
images, vessels, &c.—The keffekil or meerschaum, ^ 
from Natolia, of which pipe bowls are made; and 
a related substance, called keffekilite by Dr. Fischer, 
who discovered it in the Crimea.— Lithomarge^ 
the more remarkable varieties of which are, that 
of a reddish yellow colour, from Rochlitz, in por¬ 
phyry; the fine purplish blue variety form Planitz, 
called terra miracidosa Saxonlca by old writers.— 
Fullers earth, — Bole\ green earthy See. 
(Cases 19 and^i),) In these and the three following 
table-cases are deposited the various carbonates of 
lime, —Crystallized carbonate , of lime or calcareous 
spar; specimens illustrative of the cleavage, super¬ 
numerary joints, colour, &c. ; primitive rhombo- 
hedron (rhomboid); various secondary rhombohe- 
drons: amongst these the most common, but not the 
least striking, is the inverse rhombohedron, so called 
from 
