a. Black. " 
h. Deep greeri, 
c. Light green. 
d. Red. 
e. Bluifli grey. 
/. White. Thefe colours are all mixed to^ 
gether in the Terpentine ftone, fron> Zoe- 
blitz, but the greep is the moft predomi- 
nant colour. 
SECT. LXXXIIL 
p Mixed with iron, I'erra forcellanea fmrH 
This is 
A DifFufible in water. 
a. Red, h terre rouge^ from Montmartfe^ 
and China. 
Some of the bricks which are imported 
from fomc certain places in Germany, 
feem to be rnade of this kind. 
Indurated. 
I. Martial foap earth, Creta Brianzonica 
martialis. 
a. Red, from Jarfberg, in Norway.' 
It is likewife mixed with fome cal- 
careous matter. 
Martial foap rock, Steatites martialis^ 
a. Black, from Sundborn, \n Dalarne, 
Torrakeberget, in Werrneland, Offer- 
dal, in Jemtland. 
k Red, from Siljejord in Teleiparken; 
in Norway 
♦ Since the iron renders the fo called refractory clays, as 
well as other clays, ealier fulible than they really are by 
thenifelves ; it might be queried, how it can be determined, 
pf what fpedes cf argillaceous matter thefe confill ? To this 
it 
