122 
LONG 
GALLERY. 
Nat. Hist. 
Bohemia.—Molybdic acid and molybdates :— molybdic 
acid or molybdena oclire , as a yellow powder on feld¬ 
spar, from Sweden, &c.;— molybdate of lead, or yellow 
lead ore, massive, lamelliform, and crystallized, on 
compact limestone, &c., chiefly from Bleiberg in Ca- 
rinthia. 
Case 41. Oxide of chromium and chromates :—a 
fine suite of specimens of chromate of lead, or red lead 
ore, from the gold mines of Beresof in Siberia, where 
it chiefly occurs in a kind of micaceous rock, mixed 
with particles of quartz and brown iron-stone :— chro¬ 
mate of lead and copper , called vauquelinite , a conco¬ 
mitant of the red lead ore ;— chromate of iron, from the 
department of Var in France, and from Baltimore in 
Maryland, intermixed with talc stained purple by chro¬ 
mic acid.—Vanadic acid and vanadiates:— vanadiate of 
lead. —Boracic acid and borates :— borax , from Tibet; 
— borate of soda ;— borate of magnesia or boracite y in 
separate crystals, and the same imbedded in gypsum; 
—datolite, being a borate with trisilicate of lime, from 
Arendahl in Norway, (that of Sonthofen, supposed to 
be a distinct species, has been called humboldtite by 
Levy,) and the globular-fibrous variety called botryo- 
lite, likewise from Arendahl. 
In this Table Case begins the family of the Carbo¬ 
nates :— carbonate of soda, among which is the African 
trona ;— carbonate of strontia, also called strontianite, 
in prismatic and acicular crystals, which latter have 
sometimes been mistaken for arragonite;— carbonate of 
barytes or withe-rite, among the specimens of which may 
be particularised the beautiful groups of double six- 
sided pyramids, and those of six-sided prismatic crys¬ 
tals ;— barytocalcite. 
Case 42. Carbonate of lime. The whole of this 
Table Case is appropriated to the species called arrago¬ 
nite , among the principal specimens of which are the 
groups of prismatic crystals from Kosel, Bohemia, Ar- 
ragon, &c., those of the coralloid variety of this sub¬ 
stance from Eisenertz in Stiria, formerly called flos 
fcrri, 
