26 
saloon, gant variety from Kamschatka, denominated 
Nat. Hist. S rossu ^ ar 9 on account of the resemblance which 
its separate crystals bear to a gooseberry.—Tra¬ 
pezoidal and emarginated crystals of the black 
garnets, called melanite, found particularly in the 
neighbourhood of Frascati.—The allochroite, also 
called splintery garnet, from Drammen in Nor¬ 
way.—The aplome , whose dodecahedral crystals 
differ from those of the garnet in being streaked 
in the direction of the short diagonal of their 
rhomboidal planes.—The cinnamon-stone from 
Ceylon, a mineral, which was supposed to contain 
zirconia, till a more accurate analysis proved it 
to be a substance nearly allied to garnet and 
vesuvian : some polished pieces of the same, being 
the true hyacinth.—Among the specimens of 
'vesuvian or idocrase , the more conspicuous are the 
large beautiful crystals (the unibinaire of Haiiy ) 
discovered by Laxmann on the banks of the Vilui 
in Kamschatka, imbedded in a steatitic rock ; 
those from Vesuvius, where this substance occurs 
accompanied by other volcanic ejections, have, 
in Italy, obtained the appellation of volcanic 
gems, hyacinths and chrysolites.— Gehlenite .—• 
In this case, though not very closely allied to 
the garnet tribe, is also deposited the staurolite 
(called grenatite in Switzerland) : besides seve¬ 
ral varieties of the cruciform and other crystals 
from Britany, we have modifications of the simple 
crystals in mica-slate from St. Gothard, accom- 
