62 
natural history. (Minerals.) 
[north 
panied and partly coloured by green carbonate of copper; the crystallized 
varieties from Siberia, Mies in Bohemia, &c.;—the pulverulent va¬ 
riety, &e.— Carbonate of bismuth , from the principality of Reuss.— 
To which are added some specimens of the rare carbonates of cerium, 
as coating on cerite,from Bastnas ;—of yttria on orthite, from Ytterby, 
Sweden, &c. 
Case 50. 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 w T hich 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 car¬ 
bonate epigene. 
Case 51. The green carbonates of copper, among "which may be 
specified the fine and rare varieties of fibrous 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 very 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 ;— sulphate of soda, or glauber salt; — thenar dite, an 
anhydrous sulphate of soda, found in crystalline crusts, at the bottom of 
the briny -waters of Espartines in Spain, five leagues from Madrid;— 
glauberite, 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 by sulphates of baryta or baroselenite (heavy-spar), 
among wdiich may be particularized the splendid groups of crystal 
from Schemnitz in Hungary, and Clausthal in the Hartz, Travers- 
ella in Piedmont, the large very perfect crystals from Dufton, Cum¬ 
berland, &c., the curved-lamella varieties; the columnar, resem¬ 
bling carbonate 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 marble, &c. ; the cawk of Derbyshire and Staffordshire ; 
fetid baroselenite or hepatite, an intimate mixture of sulphate of baryta 
with bituminous matter ; earthy baroselenite : —also the wolnyne from 
Muzsay in Hungary is only a variety of sulphate of baryta. 
Case 53. Sulphate of baryta continued, and 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 crystals 
from La Catolica in Sicily, accompanied by sulphur ; those from the 
vicinity 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 Meudon ; the 
radiated and fibrous celestine from Pennsylvania, &c. 
