37 
tions (coral ore) ; muriate aj mercury, or corneous 
mercury, with native quicksilver, &c. 
{Case 30.) This case contains (besides some ad¬ 
ditional specimensof gold and mercurial ores, among 
the latter of which is the scarce native 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 Kongsberg 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 
arsenical silver from Guadalcanal in Andalusia.— 
Among the numerous varieties of native silver may 
he 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 crystals.—Common 
sulphuret of silver, or vitreous silver ; massive, cry¬ 
stallized, and in other external forms, among winch 
are the laminar and capillary.—Brittle vitreous sil¬ 
ver, of which some specimens are also deposited in 
the following table case.— JVhitesilver ore. 
( Case 31.) The ores of silver contained in this 
case are the dark and light-coloured varieties of red 
or ruby silver ore , massive, crystallized, and in 
combination with various substances; the black 
silver ore, or sooty silver, which has not been ana¬ 
lysed ;—the muriate of silver , called also corneous 
silver 
SALOON. 
Nat. Hist. 
