120 
LONG 
GALLERY. 
Nat. Hist. 
crystals, at Capao, near Villaricca, in Brazil, and in 
the chlorite slate of that neighbourhood ;— chrysoberyl 
or cymophane, among the specimens of which may be 
specified those in a matrix of quartz and feldspar with 
garnets, from Haddam in Connecticut, and also those 
from Saratoga and New York. In this Case are also 
placed the specimens of lazulite or lapis lazuli (which 
furnishes the valuable pigment known by the name of 
ultramarine), the hauyne , and a few other of those im¬ 
perfectly known silicates of alumina, soda and lime 
combined with sulphates. To these latter also the so- 
dalite (next Table Case) is commonly referred, but it 
contains muriatic acid. 
Case 88 is chiefly occupied by the tourmaline , a 
species net yet well understood as to its chemical con¬ 
stitution, but many varieties of which have been found 
to contain boracic acid. Among those here deposited 
are, the rubellite , also called siberite (tourmaline apyre 
of Haiiy), a specimen of which, remarkable both for 
size and form, is that in the centre of the Case: it was 
presented by the king of Ava to the late Colonel Symes, 
when on an embassy to that country, and afterwards 
placed by the latter in Mr. Grey file’s collection ; other 
red and blue varieties, chiefly from Siberia and from 
Massachusetts in North America ; the flesh-coloured 
tourmaline, from Rozena in Moravia; the dark green, 
called Brazilian emerald; the asparagus green variety 
in dolomite from Campo Longo; varieties of common 
shorl;— ’axinite, in most beautiful crystals, from Bourg 
d'Oisans in Dauphiny, from Norway, &c. 
Case 39. The silicates terminate in this Table Case, 
with the topaze and chondrodite, substances which 
might be classed with the fluor-metals or fluorides 
(in Case 59) ;—among the specimens of topaz here de¬ 
posited may be specified a series of crystals of Saxon, 
Brazilian, and Siberian varieties, among which there 
are several new modifications; Saxon varieties im¬ 
bedded in the topaz rock, an aggregate of topaz, shorl, 
quartz, and sometimes mica; a fine Brazilian topaz im¬ 
bedded 
