EARTHS. AGGREGATE. 64. Arcnarius. 
"Soy 
Lapis arenac. ochra, &c. CronR. ttiin. Z74. 4. 
Found in Sn.veden and Germany^ ot ?. red or yellow colour. 
The inhabitants near the river Haukipudas in Ofirobothnia, dig 
the fand from the bottom of the river, collefl it into heaps, 
and leave it for a year or two to the inllticnce of the atmol- 
phere, when it becomes fo impregnated with iron that they 
form their hearths of it. 
Confiding of grains congliiiinated with a larger portion of 
■t«r. oxytle of iron. 
Ferruginous fandllone. Kirn.v an mineral- 1. p. 365. 
Sandltonc. Sunxierby Brit. min. I . p. 1 19. /. 55. 
Found in Britain and Germany, of a browniih or ycllowilh co- 
lour, and is frequently imprefled with the calls of fhells. 
[t is fometimes )o rich in iron ore as to be worked with ad- 
vantage. 
'^obaltifer. Condding of grains conglutinated by oxyde of cobalt. 
Cron/t. miner, /eft, 276. 3. 
Found in the mines of Germany. 
(oprifer. Confiding of grains conglutinated by a cement of oxyde of 
copper. 
Crottft. miner. feB. 276. 2. 
Found in the mines of Siberia and Ilejfe. 
E. More compound. 
iriieus. Compofed of unequal grains cemented by'l.Kh.rated alu- 
mina, with frequently fragments of quartz and Hate. 
Cbem. annal. 178;. 2, p. 43 <• & >786. 2.P.24I. 
Granwacke. LaBus boeb. t. p. 141. . , - r p j 
Found in the Ural mountains ot Siberia, m thofe of Saxony and 
other parts of the continent, in Itrata alternating with layers, 
cf ilatc and lydian done, nd is olten rich in metallic veins: 
the argil is bUieini-grey tending to black j the grains gene- 
rally white, rarely grecniih or red, but varying much in fize 
and proportion : fometimes it contains Ipar, or bitumen, or 
the veftiges of animal or vegetoble iubftances, with rarely a 
little mica. 
^oniacularis Confiding of fmaller grains mixed with mica. 
baxum cotaceum. Syji. nat. xii. 3. p. 74 - "• > 2 * 
Cos faxofa. WalLjyll. miner. 1. p. 193 ' S' 
Wlielftone, Schmeijser miner. 1. p. 327. , 
2. baxuiii flenonis. Syft. nat. xii. 3. p. 75. »• > 3 ' 
3. Saxum undulatura. Syjt.nat,yi\\. 3- p' 7 - 1 * ^• 9 * 
Feund every where in mountains and hills of &nJ, cfpecialTy 
li ofe of a more recent date : colour rcddilli, jtlbwtih, ru- 
