' 1 ^ 4 ^ A SYSTEM OF 
the common manganefe, by giving to 
the borax a deep red colour in the fire : 
this fort acquires a reddifh brown co- 
lour when it is calcined. 
k Red manganefe is faid to be found in 
Piedmont. This I have never feen ^ but 
r” I have been told by an ingenious gentle- 
man, that this variety is free from iron, 
and gives to glafs rather a red than a vio- 
let colour. 
SECT. CXVI. 
2. Mixed with a fmall quantity of iron, 
Magnefia parum martialis. 
a. &ack manganefe, with a metallic bright- 
nefs. This is the moft common kind, 
and is employed at the glafs-houfes, and 
by the potters. 
It is found, ' 
I . Solid, of a flaggy texture, Magnefm 
tesctura vitrea^ from Skidberget, in 
the parifh of Lekfand, in the province 
of Dalarne. 
V 2. Steel grained, alfo from Skidberget. 
3. Radiated, Radiata^ ftill from Skid- 
berget, and Tiveden, in the province 
of Oftergottland. 
4. Criftallifed. 
a. In form of coherent hemifpheres, 
Hemifpheriis contimis^ from Skid- 
berget in Lekfand. 
SECT. CXVIL 
3. Blended with a fmall quantity of iron 
and tin, Magnejia parva cum portione mar-^ 
tis 
