[A S Y S T E M OF: 
SECT, XIX. 
M, Cryflallifed Gypfum, Gypfum cryftaUifatum, 
Gypfeoiis Dmfen, Drufi^ Gypfe^e, 
I. Drufen of cryftals of pure fparry gypfum. 
A. W edge-formed, Cuneiformes^ are com- 
pofed of a pure fpar-like gypfum. Sec 
Sedo xyiii. i, 
1. Clear and colourlefs, from Switzerland. 
2. Wlikifh yellow, from Montmartre. 
B. ’ Capillary, Capillares, 
a. Opaque, whitilh yellow, from Stoll- 
berget in Kopparberg Sian in Sweden. 
C. Of ponderous fpar-like Gypfum, Marmor 
pietallicum Druficum^ 
Jagged or like cock’s combs, Crijlati* 
Thefe refemble cock’s combs, and are 
found in clefts or flffures accreted on 
the furfaces of balls of the fame fub- 
ftance. 
2. White, from Hartz and Kongfberg 
in Norway. 
3. Reddifh, from Wildeman mipe is 
the Hartz. 
SECT. XX. 
Staladltical Gypfum, StalailiUs Gypfeus. 
dps Sinter* 
This, perhaps, may be found of as many 
different figures as the calcareous ftaladites. 
or fmters. See Sed. xii. c* 
I have only feen the following, viz, 
i 
iimeftones and fluors, which is only produced by their being 
fiowly heated, and feems to arife from a phlogifton, which is 
deftroyed in a glowing heat. 
