19 
blue variety from Felsobanya in Transylvania, 
crystallized in cubes; the branched and stalac- 
tical calcedony from Iceland, &c. ; the botry- 
oidal from Ferroe; nodules including water (en- 
hydrites) from Monte Berico, near Vicenza, 
where they occur in volcanic rocks : cut and 
polished pieces of calcedony, with black and 
red dendritic and other figures,commonly called 
mocha stones; varieties with white, brown, and 
black, straight or curved lines; onyx, sardo¬ 
nyx, &c. 
Case 7. Calcedonic substances continued. 
Among these are various specimens of the red and 
yellowish varieties of calcedony, called cafneliant 
striped carnelians, he,—Heliotrope, an intimate 
mixture of calcedony and green earth, which, 
when containing disseminated particles of red 
jasper, is commonly termed blood-stone.—The 
beautiful and much esteemed variety of calce¬ 
dony, called chrysoprase : it has hitherto been 
only found at Kosemiitz in Silesia, accompanied 
by a siliceous earthy substance called pimelite, 
which,like the chrysoprase,owes its green colour 
to oxide of nickel.—By way of appendix to the 
calcedonic substances, are added afew specimens 
of the less compound varieties agatespn which 
common calcedony, carnelian, and heliotrope 
respectively form the predominant ingredients. 
[See also .the table-cases. Room L]—Of flint, 
a well known mineral substance, several inter¬ 
esting varieties are deposited in this case. 
c 2 Case 8, 
SALOON. 
Nat. Hist. 
