58 
natural history. (Minerals.) 
[north 
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 7 more generally designated by the name of epidote, 
given to them by Haliy. To this also belongs the manganesiferovs epi¬ 
dote, considered by some as an ore of manganese.— Cammingtonite .— 
Zoisite _Among the specimens of idocrase (vesuvian of Werner), the 
more conspicuous are the large beautiful crystals (the unibinaire of 
Haiiy), discovered by Laxmannon 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 Teilemarken 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 melaniie from the vicinity of Frascati, and some 
browmish-biack varieties ; the colophonite, bearing a distant resemblance 
to rosin, from Arendal, in Norway; the grossular or Wiiui garnet, a 
fine light-green species from Kamschatka, so called from the fancied 
resemblance which its separate crystals bear to a gooseberry; the atto- 
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 wdrich species the melilite 
from Capo di Bove, near Rome, is now generally referred;—the kar- 
pholite from Bohemia, &c. 
Case 37. One half of this Table Case is set apart for the silicates 
containing glucina and alumina, the principal species of wdiich is the 
beryl, 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 hair 
blue and transparent, half white and opaque, from Odontehelong near 
Nerchinsk;—the bluish and greenish opaque beryls from Acworth in 
New Hampshire, wriiere massy crystals have been found (the tw T 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 Viliaricca, in Brazil, and in the chlo¬ 
rite slate of that territory;—the phenacite or phenakite of Norden- 
skiold (which as a bisilicate of glucine, might be referred to the 
