MINERALOGY. 
39 
moft other kinds of Hones. The arable lands in the 
province of Jemtland, at Rettwick in Dalarne, at 
Kinnekulle in Wefeigottland, and in other placesj 
which confift merely of a calcareous earth, or a 
mouldered ilate, would fuffer a great deal from 
the fun, and a dry feafon, if they were not co- 
vered with lumps of limeftone. 
The art of building cannot be purfued without 
the life of limeftone ; and in this buftnefs alone 
it is known, and made life of under different names. 
The foiid limeftone ( SeT. vii. ) commonly 
found in Sweden, is moftly flatty, and when it is 
of fuch indifferent colours as not to defen/e po- 
lifliing, is called in Swedifli ‘Telgjlen^ Alfvarfien^ 
and Oelandften^ in Englifh Amply Limeftones. 
The thickeft ftrata are always employed in large 
works, to which purpofe they are very well 
adapted ; and the thinner are cut into fquare flabs 
to pave the floors, and for the ftairs of houfes, 
and are allb applied to other ufes. But great 
care muft be taken in the choice of thefe ftones, 
Ance it will happen that the Aner works, made of 
this kind of ftone, may, in length of time, crack 
and break into two or more plates, efpecially if 
they are expofed to the open air, becaule this 
ftone is for the moft part fet with fmali partition 
veins of indurated marie, which moulders in the 
air. And this is the reafon why the uppermoft 
ftrata, in thofe quarries, are always rejeded, and 
regarded as a different kind offtone, and are, by 
the SwTdifli workmen particularly, called Gorften^ 
in Englifh Rubble-ftone. 
When the limeftone is of brighter co- 
lours, though fometimes no more than only 
of a dark brown, it receives the pompous 
name of Marble : and for fuch works as are 
tQ be poliftied, the pieces are always chofen cut 
D 4. of 
