182 NATURAL HISTORY. [NORTH 
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 enclose, 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 Haddam 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. r 
Case 38. In this Case are provisionally placed (be¬ 
sides sodaliie, eudialyte , and pyrosmalite , substances which, 
being chloriferous, may perhaps be referred to the chlo¬ 
rides, Case 80), 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 Grevilie's 
collection ; other red and blue varieties, chiefly from Siberia 
and from Massachusetts in North America ; the fiesh- 
coloured tourmaline, from Bozena in Moravia; the dark 
green, called Brazilian emerald; the asparagus-green 
