58 
NATURAL HISTORY. (Minerals.) 
[north 
the mussite and alalite from Piedmont;—the sahlite or malacolite, to 
which also belongs the haikalite, of which a few fine specimens are here 
deposited ; the pyrgome or fassaite, and the achnnte. 
Case 35. Among its contents may be particularized the mineral sub¬ 
stances which have been described under the appellations of thallite, 
arendalite, acanticone, delphinite, 8cc. ; most of these are Werner’s pzs- 
tadte^ and are now more generally designated by the name of epidote, 
given to them by Hauy. To this also belongs the manganesiferous 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 Laxmahnon the banks of the Viluiin 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-gamet, called uwarowite; —the lime-garnets, 
comprising chiefly the melanite from the vicinity of Frascati, and some 
brownish-black varieties ; the co/opAowi^e, bearing a distant resemblance 
to rosin, from Arendal, in Norway; the or Wilui garnet, a 
fine light-green species from Kamschatka, so called from the fancied 
resemblance which its separate crystals bear to a gooseberry; the alio- 
chroite, also called splintery garnet, from Norway; the romanzovite; 
Haiiy’s essonite (hessonite) or cinnamon-stone, chiefly from Ceylon, 
which was supposed to contain zirconia, till a more accurate analysis 
proved it to be nearly allied^ to vesuvian and garnet (most of the hya¬ 
cinths of commerce are cinnamon-stone). In this Case are also deposited 
—the gehlenite, from the Monzoni in Tyrol, to which species the melilite 
from Capo di Bove, near Rome, is now generally referred;—the kar^ 
pholite from Bohemia, &c. ^ x J 
Case 37. One half of this Table Case is set apart for the silicates 
containing glucina and alumina, the principal species of which is the 
hei'yl, including the emerald, a gem which owes its beautiful green 
colour to oxide of chromium : the most remarkable specimens of 
emerald are those from Santa Fe, from the Ural, from Heubachthal 
in Bavaria, and from Mount Zahara in Egypt;—among those of the 
beryl or aquamarine, may be specified the fine blue and yellow varieties 
from Mursinsk in the Ural, the colourless limpid crystals, and those half 
blue and transparent, half white and opaque, from Odontchelong near 
Nerchinsk;—the bluish and greenish opaque beryls from Acworth in 
New Hampshire, where massy crystals have been found (the tw^o 
imperfect prisms placed on the shelf near this Table Case weigh, 
the one 83, the other nearly 43 lbs.);—the euclase, a ' rare 
mineral, discovered by Dombey in Peru, but since only found as 
loose crystals, at Capao, near Viilaricca, in Brazil, and in th 3 chlo¬ 
rite slate of that territory;—the phenacite or phenakite oi Norden- 
skiold (which as a bisilicate of glucine, might be referred to the 
