168 NATURAL HISTORY. [NORTH 
in six-sided prisms.— Sulphuret of cobalt, from Bastnaes 
in Sweden. — Sulphuret of nickel, formerly called capillary 
iron-pyrites, and afterwards considered as native nickel, 
till its real composition was determined by Arfvedson.— 
Sulphuret of cadmium, lately discovered at Bishopstown in 
Renfrewshire, and to which the name of greenockite has 
been given. 
Case 7- Sulphuret of copper, copper glance, or vitreous 
copper, variously crystallized, foliated, compact, &c.; to 
which are also commonly referred the vegetable fossil re¬ 
mains known by the name of Frankenberg corn-ear.s, from 
the bituminous marl-slate of Frankenberg in Hessia, which 
are principally composed of vitreous and grey copper.— 
Sulphuret of copper and iron, to which belongs the copper 
pyrites or yellow copper, including the pale-yellow fine¬ 
grained variety called hematitiform, or blistered copper- 
pyrites; and the variegated copper ore (buntkupfererz), 
differing from the former in the proportions of its con¬ 
stituent parts, and easily known by the reddish colour of 
its fractural surfaces: crystallized, massive, and foliated.—- 
Tennantite, by some referred to fahl ore, from Cornwall. 
Case 8 contains a suite of specimens of sulphuret of lead 
or galena, which include a great variety of modifications of 
crystals, detached and grouped together, in combination 
with blende, pyrites, and many other substance^; galena 
of various grain, massive and disseminated; galena of cor¬ 
roded appearance, decomposed and regenerated; the com¬ 
pact and specular variety, called slickenside by the Derby¬ 
shire miners. 
Case 9. Sulphuret oj bismuth, or bismuth-glance, in 
acicular crystals, from Riddarhvttan, &c .—Sulphuret of 
copper and bismuth, called copper-bismuth, from Wittichen, 
in the Black Forest.—The needle-ore of Werner, a triple 
sulphuret of bismuth, lead, and copper, only found near 
Ekatherineburg, in Siberia, accompanied by native gold, 
&c.— Sulphuret of copper and tin, or tin-pyrites, only 
found in Cornwall.—The remainder of this case is taken 
up by a considerable suite of specimens of sulphuret of 
mercury or cinnabar, chiefly from Almaden, in Spain, and 
from the Palatinate, divided by Werner into the dark-red 
(by far the most common variety), and the bright-red cin¬ 
nabar (native vermilion, much esteemed by painters); the 
