190 
NATURAL HISTORY. 
[north 
occidental turquoises of lapidaries),—The kakoxene, a rare 
substance of a crystalline diverging-fibrous structure and 
yellow colour, found in the fissures of argillaceous iron¬ 
stone, nearZbirow in Bohemia ;—and the childrenite from 
Tavistock, in Devonshire : both which mineral substances 
contain, alumina and oxide of iron combined with phos¬ 
phoric acid, but require to be subjected to closer chemical 
examination.— Phosphate of uranium :—to these belong 
the yelloiv uranite or uran-mica from Autun, Limoges, 
Bodenmais; and the green uranite, or chalcolite , chiefly 
from Cornwall and Saxony: both of them phosphates of 
oxide of uranium, but distinct by containing, the former a 
small portion of phosphate of lime, and the latter an 
equivalent portion of phosphate of copper. 
This Case also contains the nitrates and part of the sul¬ 
phates. Nitrate of potassa, native nitre or saltpetre, found 
as efflorescence, mixed with other nitrates, and as crystalline 
crusts; from Pulo di Moifetta in Apulia, from near Burgos 
in Spain, Sic.—Nitrate of soda.—Sulphate of soda, orglau- 
her salt. — Thenardite, a hydrous sulphate of soda, found 
in crystalline crusts, at the bottom of the briny waters at 
the Salines d’Espartines, five miles from Madrid ;-glau- 
herite, a mineral composed of the anhydrous sulphates of 
soda and of lime, from the salt mines of Villarubia and 
Aranjuez in Spain, embedded in salt and clay.—Among 
the specimens of sulphate of strontia, or celesline, the 
more remarkable are, the splendid groups of limpid pris¬ 
matic 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 Mont¬ 
martre ; in the fissures of flint and in chalk, from Meudon; 
the radiated and fibrous celestine from Pennsylvania, 
&c. 
Case 56. The whole of this Case is occupied by the 
sulphates of baryta, (baroselenite or heavy-spar,) among 
which may be specified the splendid groups of straight - 
lamellar crystallised heavy-spar, especially those from 
Schemnitz in Hungary, and Clausthal in the Hartz, Traver- 
sella in Piedmont, &c.; the curved-lamellar varieties ; the 
