37 
amalgam^ crystallized and globular) the ores of 
silver ; between which and the ores of gold are 
placed, the alloy called electrum^ from Smeof in 
Siberia, and the auriferous silver from Kongs- 
berg in Norway, both being a mixture of gold 
and silver in different proportions. Other alloys 
of silver are the scarce antimonial silver from 
Wolfach and Andreasberg, and the ai'senicalsil¬ 
ver from Guadalcanal in Andalusia.—Among 
the numerous varieties of native silver^ may be 
particularized the various imitative forms in 
which it occurs, such as tooth-shaped, wire¬ 
shaped, dendritical, moss-like, reticular, &c., 
many of which are aggregations of minute crys¬ 
tals.—Common sulghuret of silvery or vitreous 
silver ; massive, crystallized, and in other ex¬ 
ternal forms, among which are the laminar and 
capillary.—Brittle vitreous silver, of which some 
specimens are also deposited in the following 
table-case.— White silver ore. 
Case 31. The ores of silver contained in this 
case are the dark and light coloured varieties of 
red or ruhy silver ore, massive, crystallized, and 
in combination with various substances; the black 
silver ore^ or sooty silver, which has not been ana¬ 
lysed ;— ihemuriate of silver, called also corneous 
silver and horn-ore, ofvarious colours, amorphous, 
botryoidal, in laminae, and crystallized in minute 
cubes and octahedrons ;—the very scarce carbo¬ 
nate of silver, also called grey silver ore, from 
Alt-Wolfach in Suabia, he. —In this case begin 
the 
SALOON. 
Nat. Hist. 
