NATURAL HISTORY. 
64 
[north 
per; the crystallized varieties from Siberia, Mies in Bohemia, &c.;— 
the pulverulent variety, &c. 
Case oO. In this and the following Case are deposited the car- 
bonates of copper, viz. the blue copper, or copper-azure, the more re¬ 
markable varieties of which are those from Chessy, and from the Ban- 
nat, combined with various substances: — the earthy varieties, some of 
which have been used as pigment sold under the name of mountain- 
blue ; — those crystallized varieties which, passing from the state of blue 
into that of green carbonate, have, by Haiiy, been called cuivre cai- 
bnoate epigene. 
Case 51. The green carbonates of copper, among which may be 
specified the fine and rare varieties offbrous malachite, in acicular crystals, 
and massive with fibrous structure and velvety appearance, accompanied 
by carbonate of lead, &c. ; and, among the specimens of compact mala¬ 
chite, those characteristic and splendid ones from the Gumashevsk and 
Turja mines, in the Uralian mountains. 
Case 52. Besides the nitrates, (such as the nitrate of potassa, na¬ 
tive nitre or saltpetre, found as efflorescence, mixed with .other salts, 
and as crystalline crusts, from Pulo di Molfetta in Apulia, from near 
Burgos in Spain, &c. ; nitrate of soda, §’c.;) this case contains part 
of the sulphates ; — sidphate of soda, or glauber salt; — thenardite, nn 
anhydrous sulphate of soda, found in crystalline crusts, at the bottom of 
the briny waters at the Salines d’Espartines, five miles from Madi’id ; — 
glauherite, a mineral composed of the anhydrous sulphates of soda and 
of lime, from the salt mines of Villarubia and Aranjuez in Spain, em¬ 
bedded in salt and clay. The rest of this, with half of the next case, 
is occupied b}’ sulphates of baryta and baroselenite, denominated 
also heavy-spar, amons which may be specified the splendid groups 
of straight-lamellar crystallized heavy-spar, especially those from 
Schemnitz in Hungarv, and Clausthal in the Hartz, Traversella in 
Piedmont, the large veiy perfect crystals from Dufton, Cumberland, 
&c.; the curved-lamella varieties; the columnar, resembling cai’- 
oonate of lead; the radiated, to which belongs the Bolognese spar, 
from Monte Paterno, near Bologna, from Bavaria, &c. ; the beautiful 
variety called ketten-spath, or chain-spar, from the Hartz; the fibrous 
and the granular varieties ; the compact, called barytic or ponderous 
inai'ble, &c. ; fetid baroselenite or hepatite, an intimate mixture of sul¬ 
phate of barvTa with bituminous matter ; earthy baroselenite: —the 
wolnyyie from Muzsay in Hungaiy, which is only a variety of sul¬ 
phate of barvia. 
Case 53. Sidphate of baryta und sulphate of strontia : — among the 
specimens of the latter salt, to which has been given the name of 
celestine, on account of the sky-blue tint of some of its varieties, the 
most remarkable are, the splendid groups of limpid prismatic ciw'stals 
from La Catolica in Sicily, accompanied by sulphur ; those from the 
vicinitv of Bristol, from St. Beat in the Dep. des Landes; those 
from Falkenstein in Tyrol; from the salt mines of Aranjuez; the 
acicular variety in the hollows of compact sulphate of strontia from 
Montmartre; in the fissures of flint and in chalk, from IMeudcn ; the 
radiated and fibrous celestine from Pennsylvania, &c. 
Case 54 contains the szdphates of lime, the principal varieties of 
which are,— the selenite or sparry gypsum, in detached crystals and 
