52 
B.6ok vul. ly in England, with and without vegetable im- 
NaTThIst. P re? sions. — Some of the alluvial substances be- 
longing to the slate formation : sand, clay., 
peat, &c. 
cases. (Shelves 4, 5, and 6.) Rocks belonging to the 
6 & / . formations of serpentine, limestone and gypsum. — 
Older serpentine mixed with primitive limestone ; 
serpentine from Zohlitz in Saxony, where it is 
manufactured into a variety of vases, chimney- 
pieces, &c. ; newer serpentine, with steatite, 
amianth, garnets; with schillerstein (Dialiage 
of Haiiy). 
Primitive limestone of various grain (large 
grained saline marble from Crodendorf, where 
it occurs in gneiss ; very fine grained statuary 
marble from Carrara) ; with mica ; with tremolite. 
Red marble from the island of Tiree. — Grey 
and variegated transition limestone, principally 
from the Hartz ; with petrifactions. — Alpine or 
oldest Fletz limestone : subordinate to it a kind 
of marl called Zech-stein by the German miners ; 
bituminous marl slate, with copper, &c. Gyp- 
sum ; older Fletz gypsum : with boracite, arra- 
gonite; selenite; with swinestone, subordinate to 
this formation. Gypsum of later formation, with 
fibrous gypsum, clay, &c. Selenite of very recent 
formation from Montmartre. Rocksalt, consti- 
tuting 
