203 
EARTHS. AGGREGATE. 64.. Arenarius. 
^‘'xosa. Compofcd of tlie fragments of v.arioiis {tones cemented to- 
gether. 
Bri.x-eia indeterminata. Crotifl. min. JeM. 273. 5. 2. 
Saxum lapitl. fixof. U all. fi/t. 1. p- 430. «.<)• 
Found in Dakcarlia and Norman and Kwedeir. 
'krilis, Compofed of tlie fragments of various (tones, (impie as 
\ycll as aggregate, cevriented together. 
I'oigt. Ner-z, Samml. a'. Celir/j. p. 15- * 5 ’ , c 
Found in the mount -.ins ol Tburingia and //r^e, under llrata ot 
bituminous marl, 
64. ARENARIUS. Coafifting of grains of End 
cemented fogetlier : occurring in ftratified moun- 
tains, and forrning entire ftrata, rocks, hills, or 
mountains ; generally of a common form, and 
breaking into indeterminate fragments. 
Sandjlone. 
A. Simpler, -with a ftllceoui cement. 
^^ilis. Elaftic, hard, apyrous, in fomewhat fcaly particles. 
Cos flexilis. Gafsend -vil. Reiefc. p. ' 55 * 
Elaiiifcher Stein. Bruchm. cheni. ann, 1784 ' 
Crell chem. ann. 1785 2. p. 479. 
Found in Brafil: of a hoary colour, rough, and not efferveiciD'g 
with acids: in larger pieces it may be calily bent backwards 
and forwards, when it returns into its former pofition with a 
fmall fpring and a flight degree of crackling noiie ; in a white 
heat it does not lofc the leaft qnanuty of its weight, nor as far 
as rt-fpefls i.s fmujler particles, of its traniparency. 
4 vaniurinp Hard, taking a. fine fliining polKli, confiding of tawny 
grains unequally tinged. 
Dauhenton Act. Par- 1781- p. 1--7. 
Avaiiturine. Schmeijjer mineral. 1. ^.114. 
Found in Britain, Spain, Bohemia, and Saxony. 
dot. Hardidi, brittle, not taking a polifli, confiding of lefier 
equal grains. Grindjlone. 
Cos Cotaria. Sjfl. nat. xli. 3. p. 6 l. n. 1. 
Cos arenacea. M' all. fijl. \. p- • 9 °* 
Sandllone. Sckmeijj'er mineral, 1. p. 324. 
Siliceous fandflone. Kir-voan. miner. l. /. 364. 
Sandilon£, Thomfon chem. />. 140. 
C c 2 
