GALLERY.] NATURAL HISTORY. J 77 
apophyllite , or ichthyophthalmite, in fine crystals, from 
Hesloe in Faroe; with stilbite; with tessellite of Brewster, 
with poonaklite of Brooke, &c.; a variety of apophyllite, 
formerly called albine , by Werner;— ckabasite or chabasie, 
in groups of primitive rhomboidal and modified crystals ; 
—the variety called haidenite from Baltimore;— mesotype 
from Auvergne, Faroe, &c., to which are also referred the 
natrolite of Klaproth, the needle-stone of Werner, the 
scolicite , the mesolite , krokalite , &c. ;—thomso?iite ;— anal- 
cime> among the crystallized varieties of which are re¬ 
markably large specimens of the trapezoidal and triepointe 
modifications from Fassa in Tyrol. 
Case 28. Zeolitic substances continued; stilbite and 
heulandite ; — brewsterite;—laumontite or lomonite, also 
called efflorescent zeolite, because some of its varieties are 
subject to decomposition by exposure to the air;— prehnite, 
the grass-green variety of which, discovered in South 
Africa by the Abbe Rochon, has been mistaken for chryso¬ 
lite, chrysoprase, and even emerald;—to this also belongs 
the koupholite of Vauquelin. The substance known by 
the name of Chinese jade or you-stone, is likewise placed 
with prehnite, to which it has been referred by Count 
Bournon; but no chemical analysis has as yet been given 
of it.—A suite of specimens of comptonite from Vesuvius, 
lining the cavities of a pyroxenic lava, &c., accompanied 
by gismondine and other crystallized substances ;-gmeli- 
nite or hydrolite ;—levine, and some other new species of 
this extensive family of minerals. 
Case 29. To the same family belongs the harmotome 
or cross stone, divided into baryte-harmotome and potass- 
harmotome, to which latter are to be referred the Vesuvian 
minerals called zeagonite , gismondine , abrazite, and also 
the philipsite . 
The remainder of this Case is occupied by species of the 
feldspar family.— Common feldspar , variously crystallized 
and massive: among the specimens here deposited may be 
specified—the fine green variety from Siberia, called ama¬ 
zon stone; the beautiful large crystals from Baveno ; feld¬ 
spar with embedded crystals and fragments of quartz (gra¬ 
phic stone, graphic granite), from Siberia, &c.;— Labra¬ 
dor feldspar (also called opalescent feldspar, being remark- 
