77 
gallery.] natural history. (Minerals.) 
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 baroselenite or hepatite , an intimate mixture of sul- 
phate of baryta with bituminous matter; earthy baroselenite the 
wolnyne from Muzsay in Hungary, which is only a variety of sul- 
phate of baryta. 
Case 53. Sulphate of baryta 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. 
Case 54 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 Swisserland, Montmartre near Paris, Ox- 
ford, &c. ; from St. Jago di Compostella, stained by red iron ochre ; 
the fibrous gypsum with silky lustre, from Derbyshire, Swisserland, 
Montserrat ; the granular gypsum or alabaster ; the compact variety, to 
which belongs the stalagmitical gypsum from Guadaloupe ; the scaly 
gypsum (chaux sulphatee niviforme of Haiiy) from Montmartre ; com- 
mon earthy gypsum, &e. — Anhydrous sulphate of lime, or anhydrite, 
(also called cube-spar and muriacite,) crystalline, fibrous, granular and 
compact ; to the last of "which belong some of the Italian varieties 
known by the name of bardiglio and bardiglione, as also the singular 
fibrous-compact variety, familiarly called tripe-stone (pierre des trippes), 
from the salt mines of Wieliczka. 
Case 55. Sulphates continued •. — sulphate of magnesia, or epsomite, 
generally occurring in crystalline fibres : the fine variety form Calatayud 
fn Arragon ; also the haar salz (capillary salt) of Idria belongs to this 
species, and the stalactic cobalt- vitriol, as it is called, from Herrengrund 
in Hungary, which is only sulphate of magnesia, coloured red by oxide 
of cobalt. — Polyhalite, a chemical compound of several sulphates, 
formerly mistaken for anhydrous sulphate of lime : compact and fibrous, 
from the salt formation of Berchtesgaden in Bavaria, and Ischel in 
Austria. — Sulphate of zinc, white vitriol or gallitzinite. — Sulphate of 
iron, green vitriol, or melantherite, (a salt mostly produced by the de- 
composition of iron pyrites,) in beautiful large rhomb ohedral crystals, 
from Bodenmais in Bavaria, and massive, and in stalactic-fibrous forms, 
such as the specimens from the Rammelsberg, in the Hartz, where it 
also occurs in the form of yellow scales, known by the name of misy ; 
and as concretions of a red colour, called vitriol-roth or botryogene : 
the plumose vitriol ( federsalz ), and a botryoidal-reniform substance 
called bergbutter, are nothing but casual mixtures of sulphate of iron and 
hydrous sulphate of alumina. — Sulphate of copper, or copper vitriol 
the finest sky-blue specimens here deposited, together with the stalactic, 
* A remarkably fine group of selenite crystals is placed on a separate stand be- 
tween Table 54 and the window : it is from Herzog Ernst level, Remhardsbrunn, 
Saxe-Coburg. Presented by H. R. H. Prince Albert. 
