192 NATURAL HISTORY. [NORTH 
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 hergbuiter , 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 Joachims- 
thal, Bohemia. — Sulphate of lead , lead-vitriol, or an - 
glesite, 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 cu¬ 
preous sulphato-carbonate (caledonite ) of lead, &c., from 
Leadhills, &c. The rest of this Case is occupied by sul¬ 
phates of alumina common alum , crystallized, fibrous. 
&c., from various places ; and the hydrous subsulphate 
of alumina, called aluminite, or websterite, from Sussex 
and from Halle in the territory of Magdeb&rg, 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 aluminite or alum-stone (alunite of some minera¬ 
logists,) from Tolfa, &c., which is a basic sulphate of 
alumina and potassa. 
Case 59 contains the fluorides, of which by far the most 
important species is the fluoride of calcium, generally 
called fluate of lime an A 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-fiuor; earthy and compact fluor, &c., chiefly from 
Derbyshire and Saxony.— Fluoride of calcium, yttrium and 
cerium;—yttrocerite; and some related minerals from 
