18 
SALOON. 
Nat. Hist. 
to that country, and afterwards deposited by the lat¬ 
ter in Mr. Greville’s collection. Other red and blue 
varieties from Siberia, and from Massachusets in 
North America; the flesh-coloured tourmaline from 
Rozena in Moravia (which is by some considered 
as a variety of pycnite), &c.—Varieties of common 
shorl. 
(Case 4.) In this and the following case are ar¬ 
ranged the substances belonging to the species of 
quartz .—Rock crystal: various modifications of its 
crystalline forms: small dodecahedral and other 
crystals, known by the trivial names of Gibraltar 
diamonds, Bristol diamonds, &c.; varieties of co¬ 
lour according to which the cr}^stals obtain the vul¬ 
gar denominations of smoky topaz or morion, cairn¬ 
gorm, citrine, &c. ; specimens of rock crystal, in¬ 
closing various substances, such as rutile, brown 
iron-stone, micaceous iron, needle antimony, acti- 
note, asbest, chlorite, &c.; groups of rock crystal. 
—Amethyst quartz of various tints, in grouped cry¬ 
stals ; nodule lined with crystals of amethyst and 
cross stone or harmotome, from Oherstein. To 
this is added the thick-fibrous amethyst of Werner, 
considered by others as a sub-species of common 
quartz. 
( Case 5.) Common quartz: among the specimens 
of this widely diflused substance, which offers such 
great variety in its external aspect, the more remark¬ 
able are those of hacked, corroded and cellular quartz 
from 
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