gallery.] natural history. (Minerals.) 73 
berian red lead ore ;— chrome-iron , from the department of Var in 
France, and from Baltimore in Maryland, intermixed with talc stained 
purple by chromic acid. 
Boracie acid ( sassoline ) and borates borate of soJa,the salt known 
by the names of borax and tincal, from Tibet, Monte-rotondo, Tuscany, 
&c.— borate of magnesia or boracite in separate crystals, and the same 
embedded in gypsum;— datolite , being a borate with a tri-silicate of 
lime, from Arendal in Norway; the variety from Sonthofen (supposed 
to be a distinct species, called humboldtite by Levy); and the globular- 
fibrous variety (which has received the name of botryolite) likewise from 
Arendal. 
Case 40 is set apart for such silicates as contain one or more borates, 
of w T hich, however, in some cases, it is uncertain how far these may be 
considered as essential component parts.—To this order belong the 
species tourmaline and axinite. Among the red-coloured varieties 
of the former, some of which are called rubellite, the most remark¬ 
able deposited here is a specimen of uncommon form and dimensions, 
which was presented by the king of Ava to the late Colonel Symes, 
when on an embassy to that country; blue varieties of the same, some 
of them known by the name of indicolite; a suite of modifications of 
tourmaline crystals of those colours, as well as of others, such as green 
of various shades, among which, those from Brazil, Elba, and from 
Campolongo deserve more particular notice. Of the axinite, Wer¬ 
ner’s Thumerstein, very characteristic specimens from Bourg d’Osians, 
Norway, &c., will be found in this Table Case. 
Case 41. In this Case begins the order of the Carbonates_ Carbonate 
of soda, from various localities.— Carbonate of baryta or witherite, among 
the specimens of which may be particularized the beautiful groups of 
double six-sided pyramids, and those of six-sided prismatic crystals. 
—Barytocalcite , from Alston Moor in Cumberland.— Carbonate of 
strontia, called strontianite, chiefly from Strontian in Argyleshire, in 
prismatic and acicular crystals, which latter have sometimes been mis¬ 
taken for arragonite. The remaining part of this Case is occupied by 
such specimens of the mineral species called arragonite as have partly 
been found to contain a few per cent, of carbonate of strontia: they 
are, however, essentially carbonates of lime, though of a different crystal 
system. Among the more interesting of the regular forms here deposited 
are the loose and variously grouped simple and hemitrope crystals from 
Arragon, and from Ilerrengrund, in Hungary, Kosel, Bohemia, &c., 
and the fine acicularlv crystallized varieties, in brown iron stone, 
from Ilefeld, in volcanic ejections of Vesuvius, &c. : they are con¬ 
tinued in * 
Case 42, in which are also placed several very perfect specimens of 
the coralloidal variety of arragonite from Eisenertz in Stiria, and 
Hiittenberg in Carinthia, formerly called flos ferri, Sec. : to the massive 
varieties of this species some of the calcareous deposits of Carlsbad in 
Bohemia may be referred. The remainder of the Case contains 
several striking varieties of common carbonate of lime or calcite , 
some of which have been mistaken for arragonite. 
Cases 43 to 45 contain crystallized varieties of calcite. Among 
the specimens placed in the first of these Table Cases may be speci¬ 
fied those illustrative of double refraction, cleavage, supernumerary 
E 
