53 
crystals, in beautiful groups of emerald green 
and yellow colours.—The ores of tellurium or 
sylvane. which are divided into native tellurium, 
white and yellow (containing gold and iron) ; the 
graphic ore, so called on account of the disposi¬ 
tion of its minute laminar crystals into groups 
that bear a distant resemblance to written charac¬ 
ters;, and the black or nagyag ore (commonly 
alloyed with gold and some lead).—The ceriteor 
cereri e (oxyde of cerium) from Bastnaes, in. 
Westrnaidand, in Sweden.—A specimen of the 
oxyde of chromium, in quartz, discovered by M. 
Leschevin at Creuzot, in the Department of the 
Saone and Loire. 
EIGHTH ROOM. 
This room, in its present state of arrangement, 
contains miscellaneous articles relative to minera- 
iogy. 
In the tables are deposited objects relative to 
technical mineralogy, or mineral substances in 
a wrought state, with the scientific and familiar 
names affixed to them. 
A collection of. volcanic products from 
Mounts Vesuvius, Somma, and ./Etna; vesicu¬ 
lar, slaggy, glassy lavas, tuflfos, with several other 
volcanic ejections; leucites, vesuvians in a calca- 
reo-micaceous mass, See. —Pseudo-wolcanic rocks. 
Lavas 
SALOON. 
Nat. Bust. 
ROOM VIII 
CASES 
1 & 2 
