GALLERY.! ^ natural history. (Minerals.) 77 
the baths of San Felippe, where moulds of medals, gems, &c., are placed 
in suitable situations to receive the spray impregnated with calcareous 
particles. — Chalk — Anthr aconite or madreporite Marie , &c. 
Case 47. In this Case, besides some specimens of carbonate of man- 
nesia, or magnesite , from Baudissero and from New Jersey, are placed 
those substances which, being chiefly composed of carbonate of lime 
and carbonate of magnesia, are called magnesian limestone , or dolomite 
comprising Werner’s rhomb-spar, dolomite and brown spar. Amorm 
the varieties of the first of these sub-species are those! called miemite, tha- 
randite, and some modifications of pearl spar ; among those of dolo- 
mite, a remarkable one is that from Pittsfield, Massachusetts, North 
America, which exhibits a considerable degree of flexibility : and an- 
other having the same property will be found among the singular va- 
rieties of magnesian limestone from the vicinity of Sunderland. 
Case 48 contains Werner’s brown-spar, some of the varieties of 
which are with difficulty distinguishable from rhomb-spar and from iron- 
spar ; several interesting specimens for figure, colour and lustre, chiefly 
from Schemnitz and Kremnitz in Hungary, are deposited in this case. 
— Carbonate of iron, or iron-spar, crystallized, fibrous, massive, and bol 
tryoidal (sphcErosiderite of Hausmann) — Carbonate of manganese, or 
manganese spar, crystallized and in globular and botryoidal shapes of 
various shades of rose colour, on sulphuret of manganese, &c. 
Case 49. One half of this glass Case is occupied by the several 
varieties of carbonate of zinc, or zink-spar , (also called calamine, in 
common with the silicate of zinc or smithsonite in Case 26,) crystallized, 
botryoidal, and in other forms, among which are the pseudomorphous 
crystals, derived from modifications of carbonate of lime;— zincbloom. 
—The other half chiefly contains the carbonates of lead, lead-spar, or 
white lead ore , among which are the delicately acicular varieties from 
the Hartz, and from Cornwall, accompanied and partly coloured by 
green carbonate of copper; the crystallized varieties from Siberia, 
Mies in Bohemia, &c. ;— the pulverulent variety, kc.— Carbonate of 
bismuth, from the principality of Reuss.— To which are added some 
specimens of the rare carbonates of cerium,, as coating on cerite, from 
Bastnas ; — of yttria on orthite, from Ytterby, Sweden, &c. 
Case 50. In this and the following Case are deposited the car- 
bonates of copper, viz. the blue copper, or copper-azure, the more re- 
markable varieties of which are those from Chessy, and from the Ban- 
nat, combined with various substances the earthy varieties, some of 
which have been used as pigment sold under the name of mountain- 
blue ;— those crystallized varieties which, passing from the state of blue 
into that of green carbonate, have, by Haiiy, been called cuivre car- 
bonate epigene. 
Case 51. The green carbonates of copper, among which may be 
specified the fine and rare varieties of fibrous malachite, in acicular crystals, 
and massive, with fibrous structure and velvety appearance, accompanied 
by carbonate of lead, &c. ; and, among the specimens of compact mala- 
chite, those very characteristic and splendid ones from the Gumashevsk 
and Turja mines, in the Uralian mountains. 
calcareous deposition, which was found investing the interior of a square wooden 
pipe in Blythe Lead Mine, Derbyshire: the legs of the table are of black marble, 
from Bakewell. This table was presented by his Grace the Duke of Rutland. 
