120 NATURAL HISTORY. [lONO 
from Pulo di Molfetta in Apulia^ from near Burgos in 
Bpain^ &c .—-Nitrate of soda,—Sulphate of soda, or glanber 
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-^ 
berite, 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 celestme, the 
more remarkable are, the sptodid 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^ {barytes or heavy-spar,) among which 
may be specified the splendid groups of straight-lamellar 
crystallised heavy-spar, especially those from Schemiiitz in 
Hungary, and Clausthal in the Hartz, Traverseila in Pied¬ 
mont, &:c,; the curved-lamellar varieties; the columnar, 
resembling carbonate of lead; the radiated, to which be¬ 
longs 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 .; fetid barytes or hepatite, an inti*^ 
mate mixture of sulphate of baryta with bituminous 
matter ; earthy barytes : also the wolnyne from Muzsay 
in Hungary is a variety of sulphate of baryta. 
Case 57 contains the sulphates of lime, the principal 
varieties of which are,-“-the selenite or sparry gypsum, in 
detached crystals and splendid groups, from Bex in Swiss- 
erland, Montmartre near Paris, Oxford, &c. ,* from St. 
Jago di Compostela, stained by red iron ochre] the fibrous 
gypsum with silky lustre, from Derbyshire, Swisserland, 
Slontserrat ] the granular gypsum or alabaster; the com¬ 
pact variety, to which belongs the stalagmitical gypsum 
from Guadaloupe ; the scaly gypsum (chaux siilfatee nivi- 
forme of Haiiy) from Montmartre; common earthy gyp¬ 
sum, Slc, — Anhydrous sulphate of lime, also called anhy- 
