20 
room viii. stone, occurring in some coal formations, especial¬ 
ly. Hist, ty m England, with and without vegetable im¬ 
pressions ; roe stone, as subordinate to the 
variegated sandstone. — Some of the alluvial 
substances belonging to the slate formation: 
sand, clay, peat, &c. 
(Div . 7 ). Rocks belonging to the formations 
of serpentine, limestone and gypsum.—Older 
serpentine mixed with primitive limestone; 
serpentine from Zoblitz in Saxony, where it is 
manufactured into a variety of vases, chimney- 
pieces, &c.; newer serpentine, with steatite, 
amianth, garnets ; with schillerstein (the spath 
chatoyant 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 Zechstein by the practical 
miners ; bituminous marlslate, with copper, &c. 
Gypsum ; older Fletz gypsum : with boracite, 
arragonite; selenite; with swinestone, subordinate 
to this formation. Gypsum of later formation, with 
fibrous gypsum, clay, &c. Selenite of very recent 
formation 
