13 
hear which it is placed in the system. — Sulphur, saloon 
crystallized and massive, with selenite, &c. ; the , T ~7T * 
J > ? ' Nat. Hist. 
same found sublimed near the craters of volca- 
noes. Graphite, commonly called black lead.— 
A few specimens of black coal. — Brown coal, to 
which belongs the well known Bovey coal. — • 
Dysodile or papyraceous brown coal. — Among 
the specimens of anthracite or kohlenblende (to 
which may be referred the Kilkenny coal), is a 
specimen from Kongsberg in Norway, with na- 
tive silver. 
(Case 2.) The diamond, though combustible, 
is by common consent considered as the first of 
precious stones : among the specimens selected 
to exemplify its more usual crystalline forms, is 
a rough octohedral diamond (a pomte naive), set 
in an antique ring. With these are also placed 
specimens of the alluvial rocks in which the dia- 
monds occur in the East-Indies and in BrasiL— 
Zircon: to which belong, the common jargon of 
various colours, and the orange coloured, well 
known by the name of hyacinth ; also the va- 
riety called zirconite from Friedriehsvarn in Nor- 
way, imbedded in a rock composed of feldspar 
and hornblende. — Corundum : under which bar- 
barous, though now generally adopted, specific 
name, are comprehended the precious stones 
commonly called oriental gems, (the sapphire, 
ruby, 
