GALLERY.] 
NATURAL HISTORY. 
115 
may be specified those in a matrix of quartz and feldspar 
with garnets, from Haddarn in Connecticut, and also those 
from Saratoga and New York; lielvine, a substance which 
is considered by some as a triple silicate of glucine, iron 
and manganese. In this Case are also placed the speci¬ 
mens of lazulite or lapis lazuli, (which furnishes the 
valuable pigment known by the name of ultramarine,) 
massive and exhibiting planes of the rhomboidal dodecahe¬ 
dron ; the hauyne, and a few other of the imperfectly 
known silicates of alumina, soda and lime combined with 
sulphates : such as the spinellane , &c. 
Case 38. In this Case are provisionally placed (be¬ 
sides sodaliie, eudialytey.&nd pyrosmalite , substances which, 
being chloriferous, may perhaps be referred to the chlo¬ 
rides, Case 60) the suites of tourmaline and shorl , 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. Greville’s col¬ 
lection ; 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 com¬ 
mon shorl ; — axinite , in most beautiful crystals, from 
Bourg d’Oisans in Dauphiny, from Norway, &c. 
Case 39. The silicates terminate in this glass Case, 
with- the topaze and chondrodite, two species which, from 
their chemical composition, might be classed with the 
fluorides (in Case 59); —among the specimens of topaz 
here deposited 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 ; fine Brazilian topazes, yel¬ 
low and pink, imbedded in rock crystal, &c.;—also the 
pyrophysalite from Fahlun in Sweden, and the pycnite , 
formerly considered as a variety of beryl, are referable to 
