17 
dec! in the topaz rock, an aggregate of topaz, 
shod, quartz, and sometimes mica.—Emerald 
and beryl: several crystals of the South American 
emerald , insulated and in their matrix ; emeralds 
from Salzburg. Beryls of various colours, the 
most common of which is the variety called aqua¬ 
marine : the fine groups of these, found in fer¬ 
ruginous loam at Nerchinsk and Adontchelong 
in Siberia, are very remarkable; large crystals of 
emerald or beryl from Limoges in France, and 
from Rah en stein in Bavaria, the latter accompa¬ 
nied by tantalite,—Near the beryl (though per¬ 
haps not very nearly related to it), is placed the 
euclase, a rare crystallized mineral substance, dis¬ 
covered by Dombey, in Peru.—The pycnite , re¬ 
ferred by Werner to the beryl, under the name of 
shorlous beryl, and considered as a variety of 
topaz by Haiiy, is here placed between those two 
species.—Also the pyrophysalite from Fahlun in 
Sweden, considered by the same crystallographer 
as a variety of topaz.—This case also contains the 
tourmaline and common short . Among the va¬ 
rieties of the former may be specified the rubel- 
lite, also called siberite, (tourmaline apyre of 
Haiiy), a remarkable specimen of which, both 
with regard to form and volume, is here preserved : 
it was presented by the King of Ava to the late 
Colonel Symes, when on an embassy to that 
country, and afterwards deposited by the latter 
in Mr. Greville’s collection. Other red and blue 
d varieties 
SALOON. 
Nat, Hist. 
