DO 
separate and on limestones, on fluor spar, &c. ; 
elastic bitumens of several degrees of softness. 
{, Shelf 4.) Marbles of various colours, with 
their natural fracture, and polished ; white and 
variegated alabaster ; efflorescent and other varie¬ 
ties of selenite on limestone, &c. ; white and 
coloured clays and porcelain earths. 
(Shelf 5.) Several varieties of compact lime¬ 
stone : shell and coralline marbles, polished and 
unpolished; porous limestone with siliceous shells, 
called burr, used for hand mills ; tophus. Sic. 
{Shelf 6.) Hornstone, or chert of various 
kinds, separate and combined with limestone. 
{Shelf 1.) A collection of stalactites and wa- 
tr'icles formed in limestone caverns, some cut and 
polished ; calcareous incrustations, &c. 
{Shelves 2-3.) Calcareous spar in various 
forms of crystallization. 
{Shelf 4.) Several varieties of amethystine 
fluor spar; most of the pieces cut and polished. 
{Shelf 5.) Topazine and other varieties of 
fluor spar, with barytes, blende, iron pyrites, &e., 
mostly cut and polished. 
{Shelf 6.) Blue and other fluor crystals of 
the cubic form, with calcareous spar, blende, 
barytes, galena, &c.; polished square pieces of 
topazine and other fluor spar. 
{Shelves 1-2.) Several varieties of amygdaloid, 
toadstone ; 
ROOM VIII. 
Nat. Hist. 
CASE 
11 . 
CASE 
12 . 
CASE 
13. 
