94 
A SYSTEM OP 
SECT. LXXXVL 
I. Loofe and friable boles, or thofe which fall 
to a powder in water. 
a. Flefli-coloured bole, from Kriftiersberg, 
at Nya Kopparbetg, in Weftmanland* 
h Red. 
1. Fine, Bolus Armenus, 
2. Coarfe, Bolus communis oj^cinalis^ from 
the fand-ftone quarries at Orfa, in the 
province of Dalarne. 
3. Hard, 2" erra ruhrica. 
Cm Green, ^erre verte. 
I . Fine, from Italy. 
1. Coarfe, from Stenftorp, in the province 
of Weftergottlaiid. 
d, Bluifh grey, from Stollberget, in Koppar-* 
bergflan, in Sweden. 
Is duftlle as long as it is in the rock, 
but even then repels the water ; it con- 
tains forty per cent, of iron ; which me- 
tal being melted out of it in a clofe vef- 
fel, the iron cryftallifes on its furface. 
e* Grey. 
1. Cryftallifed in a fpherical polygonal 
figure : from Swappawari, in Lap- 
land. 
2. Of an undetermined figure, from Gren- 
gerberget, in Weftmanland 
J At the time when the terr^e Jigillatat or fealed earth§^ 
were in general ufe, the druggifts endeavoured to have them of 
all colours ; and for that reafon they took all forts of clays 
and fealed them ; not alone the natural ones, but likewife? 
fuch as had been coloured by art, or had been mixed with 
magnejia alha officinalis, or other things, were afterwards 
vended for tr«e boles 5 and for this reafon the (pecies of 
boles 
