ao6 EARTHS. AGGREGATE. 64. Arenarius, 
C. JVith an argillaceous cement, 
forcelams. Confifting of grains congl.utinated by a cement of porc^' 
lane clay. 
Cos partic. arenac, Sysl.nal. xii. 3. p. 64. a. 14, 
Lapis arer.ateus. Crantl. miner, fett. 1. i. 
' foand in a coal-pit near Bojerup in Norn.vay: under ground 
is foft, but hardens when expofed to the air, and does no^ 
melt in the lire. 
fahlunensis Confifting of minute wliite grains, with a cement 
common nitons alumina. 
Saxum cotac. rufum. Ssji. nat. xii. 3. p. 74, w. 11. 
Found at Fahhm in Sweden, where it forms the bale of.copp^'' 
mines. 
eoloratuf. Confifting of fmajler and nearly equal grains varioufiy 
tinged. 
Cos •folorata. Syst. nat, xii, 3. #.64. n. 13. 
Found fcatteredly here and there, of a yellow, green, blue, 
reddilli colour, and may probably be only a variety of 
ferruginofus. 
siratarius. Hard, confifting of equal tranfparent grains. 
Cos pdrtic. arenac. Syst. nat. xii. 3. p, 63, n. 12. 
Found almoft every where : it hardens in the air, and js 
when Ibund under fait water. 
friabihs. Confifting of minute grains (lightly cohering. 
Cos partic. friabil. Syft. nat. xii, 3. p. 63. n. 8. 
F'ound at UelfingLurg in Not way, 
fssilis. Separable into tables or plates. 
Cos iillilis, Syjt. nat.yiu.'O,. p.bz, n.y, 
Cos fiflilis, Wall. fyst. 1. p. ig6. «. 7. 
Found in Britain, Snveden, Spain, Germany, &c. varying much 
in degrees of hardnefi, fize and Uranfrarency of its grain*’ 
thicltnefs of the plates into which it may be feparated, nnd 
colour, but is generally whitilh or reddilli. It may be ul’e'^ 
for tiling, unlefs it be too porous. 
ghreosus. Soft, confifting of very minute grains. 
Cos glarcofa. Wall. fyst. I, /i. iSS. n. 2. 
Found commonly in Britain, Snaeden, and Peru: colour gref’ 
reddillr, yellowiih, or greenilh. 
D. bp lib a metallic oxyJe fupplylng the place of a cement, 
^finifigenius. Hard, confifting of grains conglutinated by a cement of ^ 
fmall quantity of oxyde of iron. 
Saxura lapillis, &c. Syft. uat. xii. 3. p, 80. ». 38. 
