50 
saloon. j n this case are a ] so p] acec j the ores of colum- 
Nat. Hist, bium or tantalum, of yttria and of cerium, &c.— 
Columbite: —the specimenfrom North America in 
whichMr.Hatchett discovered themetal (see Phil. 
Trans. 1802); yttriferous columbite or yttrotan- 
talite , from Bavaria, &c.—Silicate of yttrium: ga - 
dolinite , of which a unique crystal is here deposit¬ 
ed: pyrorthite and orthite , two scarce Swedish mi¬ 
nerals, related to gadolinite.— Cerite or cerine 
(silicate of cerium) from Bastnaes in Sweden.—• 
Yttrocerite , a fluate of lime, yttria and cerium ; 
and a related mineral composed of fluate of yttria 
and oxide of cerium, with only a small portion of 
lime, but in which is often found a fluate of the 
new earth to which Berzelius has given the name 
of tJioria. —Specimens of the oxide of chromium , 
in quartz, discovered by M. Leschevin at Creu- 
zot, in the department of the Saone and Loire. 
In the opposite compartment of this table-case 
are deposited (as appendix to the ores of iron) the 
substances called oerolithes , because they have 
fallen from the atmosphere, and meteoric stones , 
because they are by some supposed to be deposit¬ 
ed from meteors. The specimens of theformer are 
—native iron from Gross-kamsdorf in Saxony;— 
two small polished pieces of the mass found in 
Southern Africa, which weighed about 250 
pounds, and is now in the cabinet of Haarlem;— 
fragment of the iron from Senegal \—specimens 
of 
