NATURAL HISTORY. 
177 
GALLERY.] 
Montserrat; the granular gypsum or alabaster ; the compact variety, to 
which belongs the stalagmitical gypsum from Guadaloupe; the scaly 
gypsum (chaux sulphateejiiviforme of Haiiy) from Montmartre; com¬ 
mon earthy gypsum, &c.— 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 57. Sulphates continued :— sulphate of magnesia , or epsomite, 
generally occurring in crystalline fibres : the fine variety from Calatayud 
in 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, 
I from the salt formation of Berchtesgaden in Bavaria, and Ischel in 
Austria.— Sulphate of zinc, white vitriol or gallitzinite.—Sulphate of 
I iron, green vitriol, or melantherite, (a salt mostly produced by the de¬ 
composition of iron pyrites,) in beautiful large rhombohedral crystals, 
from Bodenmais in Bavaria, and massive, and in stalactic-fibrous forms, 
I 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, 
fibrous and crystallized varieties, (the large group of crystals is artificially 
prepared,) are from Herrengrund in Hungary. There are also two or 
three sub-sulphates of copper placed in this Case, which, however, stand 
in need of more accurate chemical examination.— Sulphate of oxide of 
uranium or johannite, from Joachimsthal, Bohemia.— Sulphate of lead, 
lead-vitriol, or anglesite, of which we have a suite of specimens with 
brilliant and well defined crystals from Badenweiler in Suabia, from 
the Parys mine in Anglesea, &c.; the sulphato-carbonate (lanarkite), 
and sulphato-tricarbonate (suzannite), the cupreous sulphato-carbonate 
(caledonite ) of lead, &c., from Leadhills, &c. The rest of this Case is 
occupied by sulphates of alumina :—common alum, crystallized, fibrous, 
&c., from various places; and the hydrous sub-sulphate of alumina, 
called aluminite, or websterite, from Sussex and from Halle in the terri¬ 
tory of Magdeburg, which was by some mistaken for pure alumina, and by 
others for hydrate of alumina with mechanically admixed sulphate of 
lime : it must not be confounded with another substance, also called 
aluminate or alum-stone, (alunite of some mineralogists,) from Tolfa, &c., 
which is a basic sulphate of alumina and potassa. 
Case 58 contains the fluorides, of which by far the most important 
species is the fluoride of calcium, generally called fluate of lime and 
fluor-spar: among its numerous varieties may be particularized, the 
rose-coloured crystals from Chamouni; the phosphorescent massive 
fluor-spar, called chlorophane, from Siberia; the varieties called forti- 
fication-fluor; earthy and compact fluor, &c., chiefly from Derbyshire 
