gallery.] natural history. (Minerals.) 73 
Val Tremola, where, however, it is not found), among the specimens 
of which are the fine, fibrous varieties, resembling asbest; the glassy 
tremolite, in dolomite and granular limestone, &c.— Arfvedsonite , and 
cegyrine , a variety of it;— raphilite , &c. 
Case 34. Part of this Case is occupied by the mineral substances 
called asbestine , many of which pass into some of the varieties of horn¬ 
blende ; others, both asbest and amianth, are modifications of the state 
of aggregation of different amphibolic substances; and to these Breit- 
haupt also refers his kymatine, metaxite, peponite, and pycnotrope. 
Among them may be observed specimens illustrative of the transition 
from a very close to a loose fibrous structure ;—several varieties of the 
flexible asbest or amianth , with some antique incombustible cloth, 
paper, &c., made of it;—the varieties called common and schiller- 
asbest, mountain wood, mountain cork, or nectic asbest, &c., separate, 
and in combination with other substances;—the blue and yellow asbest 
from the Orange River, South Africa, for the former of which the name 
of krohydolite has been proposed, while the other appears to be a 
silicate of iron. The remainder of this Case and part of the next con¬ 
tain pyroxenic minerals augite , in separate crystals, and embedded 
in lava from Vesuvius, together with groups of w^ell-defined crystals 
from Arendal in Norway, where this substance occurs in primitive 
rocks ;—the jeffersonite ;—the granular variety called coccolite ;—the 
hypersthene and paulite (Labrador hornblende of Werner);—the 
lievrite, also called ilvaite and yenite , in particularly perfect crystals, 
chiefly from Elba: the wehrlite appears to be a variety of this species ; 
—the varieties of diopside, at first considered as distinct species, including 
the mussite and alalite from Piedmont;—the sahlite or malacolite, to 
which also belongs the baikalite, of which a few fine specimens are here 
deposited ; the pyrgome or fassaite, and the achmite. 
Case 35. Among its contents may be particularized the mineral sub¬ 
stances which have been described under the appellations of thallite, 
arendalite, acanticone, delphinite, &c. ; most of these are Werner’s pis - 
tacite, and are now more generally designated by the name of epidote , 
given to them by Haiiy. To this also belongs the manganesiferovs epi¬ 
dote, considered by some as an ore of manganese.— Cummingtonite .— 
Zoisite _Among the specimens of idocrase (vesuvian of Werner), the 
more conspicuous are the large beautiful crystals (the unibinaire of 
Haiiy), discovered by Laxmann on the banks of the Viiui in Kamschatka, 
embedded in a steatitic rock; those from Vesuvius, where this substance 
occurs accompanied by other volcanic ejections, have, in Italy, obtained 
the name of Vesuvian gems, hyacinths, and chrysolites; the varieties 
called egerane , loboite ; that from Tellemarken in Norway, coloured 
blue by oxide of copper ( cyprine ), and the rose-coloured variety, the 
thulite, from the same locality. 
Case 36. The greater part of this Case is appropriated to the various 
species and varieties of the garnet tribe, formerly divided into noble and 
common garnets. Among the more distinct chemical species now esta¬ 
blished are:—the chrome-garnets, to which belongs the pyrope ;—the 
beautiful chrome and lime-garnet, called uwarowite ;—the lime-garnets, 
comprising chiefly the melanite from the vicinity of Frascati, and some 
brownish-black varieties; the colophonite , bearing a distant resemblance 
E 
