32 
saloon. (Case 20.) Prismatic and pyramidal modified 
Nat. Mi st. tions of the same, among the former of which 
are the beautiful prismatic and dodecahedral va- 
rieties (Mod. 2, with 3 and 4 of Bourn.) from 
the Hartz ; among the latter, the voluminous 
crystals of the metastatic variety (Mod. 36), &c. 
(Case 21.) The same continued : also hemitro- 
pic or macied crystals, among which is the beauti- 
ful heart shaped macle of the variety called, by 
Haviy, analogique disiante. (Mod. 2, 4, and 36. > 
— This case also contains granular and compact 
limestone (marbles) ; massive magnesian lime- 
stone, called dolomite, and (contiguous to it, in 
the opposite case) the crystallized magnesian 
limestone, called bitterspar, in chlorite slate, 
Sec— Fibrous limestone, the finest variety of 
which is that from Cumberland, and Andrarum 
in Sweden, with pearly lustre, which has ob- 
tained the name of satin spar. 
{Case 22.) Various specimens of stalactieal 
limestone, some varieties of which bear the name 
of alabaster in common with compact gypsum ; 
the peculiar variety called pea stone, from the 
hot springs of Carlsbad in Bohemia, and the 
white variety four d in the bed of a small river 
near Tivoli, and known by the name of confetti 
di Tivoli. — Ca^ca ecus tufo ; to which are added 
some casts of medals, made at the baths of 
San- 
