GALLERY.] NATURAL HISTORY. 171 
and Kararfvet in Sweden ; the allanite from Greenland 
(to which may be referred the cerine of Bastnaes) ; the 
orthite and pyrorthite . 
Silicates containing glucina, the principal species of 
which is the emerald , or beryl, the former being a variety 
which owes its fine green colour to oxide of chromium: 
from Santa Fe, from Mount Zahara in Egypt; and from 
Heubachthal in Salzburg; embedded in mica slate;—beryls 
of various colours; the more common of which is the variety 
called aquamarine; the perfectly white and limpid; and 
fine oil green varieties from Nerchinsk and Odontchelong 
in Siberia; the large beryls of Limoges; and from Ac- 
worth in New Hampshire, where crystals weighing up¬ 
wards of fifty-nine pounds have been found, (the fragment 
of a prism in the centre of the Case weighs nearly forty- 
three pounds) ;—the euclase , a rare crystallized mineral 
substance, discovered by Dombey in Peru, but since only 
found as loose crystals, at Capao, near Villaricca, in Bra¬ 
zil, 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 Haddarn in Connecticut, and also those 
from Saratoga and New York; helvine, 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 sodalite, eudialyte, and 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 the Hon. Charles Greville's 
