12 A SYSTEM GF 
SECT. V. 
The Calcareous Earth is found, 
1. Pure, 
I. In form of powder. Agaricus Miner dis^ 
or Lac Lun<£. 
a. White, is found in moors and at the 
bottom of lakes, at Reden in the province 
of Jemtland,atTiaimerdala in Weftergott- 
land, and alfo in the provinces of §mo- 
land, Oftergotland, and ifland of Gott- 
land in Sweden ^ 
h. Red, is alfo found in Gottland. 
c. Yellow, is found at Timmerdala, in Wef- 
tergottland f . 
• The white mineral agaric, fo called from its finenefs and 
lightnefs, like to the vegetable agaric, is found in fuch places, 
i. e. fwanip moors or peats in England and Scotland, as like- 
wife in the f jffures of the freeftone quarries of Oxfordftiire, 
Northamptonlhire, &c. but the red and yellow forts I never 
heard of in England. See Hift. Foff. noft. p. 82. N®. vii. 
t This kind of earth feems to be an impalpable powder 
of mouldered limeftones abraded and colledled by the waters, 
and is therefore common in the neighbourhoods where lime- 
Hones are found ; and if the ftone is at fome diftance, which 
is fometimes the cafe, Hill nothing contradidlory appears in 
this opinion of the origin of this fpecies ; fince in that cafe 
it has only been carried farther by the greater rapidity of 
a ftronger current of water. When this earth is found in 
the clefts of rocks, it receives more pompous names ; fuch 
as Gar, Lac &:c. &rc. It burns readily into lime, if 
it is previoufly (lamped, that it may better cohere : it is then, 
or in its native (late, ufed for white-waihing, but ealily rubs 
off by the lead touch. At certain places in the province of 
Smoland in Sweden, there is found in the moors a white earth, 
which, by its external appearance, refembles the fpecies here 
defcribed ; but it does not (hew any marks of effervefcence with 
acids, nor does it burn into lime. It were to be wifhed, that' 
thofe who have an opportunity of getting any quantity of 
this latter earth, would undertake to examine it better. 
SECT. 
