139 
the nitrates and part of the sulphates. Nitrate of potassa, 
native nitre or saltpetre , found as effloresce, mixed with 
other nitrates, and as crystalline crusts; from Pulo di Mol- 
fetta in Apulia, from near Burgos in Spain, &c.— Nitrate 
of soda. — Sulphate of soda , or glauber salt .— Thenar- 
dite , 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;— glauberite , a 
mineral composed of the anhydrous sulphates of soda 
and of lime, from the salt mines of Villarubia and Aran- 
juez in Spain, embedded in salt and clay.—Among 
the specimens of sulphate of strontia , or celestine , the 
more remarkable are, the splendid groups of limpid 
prismatic crystals from La Catolica in Sicily, accompa¬ 
nied by sulphur; those from the vicinity of Bristol, 
from St. Beat in the Dep. des Landes; those from Fal- 
kenstein in Tyrol; from the saltmines 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 celes¬ 
tine 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-lamel¬ 
lar crystallized barytes, especially those from Sehemnitz 
in Hungary, and Clausthal in the Hartz, Traversella in 
Piedmont, &c.; the curved lamellar varieties; the co¬ 
lumnar resembling 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.; fetid barytes or he¬ 
patite , an intimate 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 
LONG 
GALLERY 
Nat. Hist 
