EARTHS. CALCAREOUS. i6. PifoUthus. 17. Marmor. 89 



solidut. Seffile, folid. 



Syji. nat. xii, %> p. I 83, «, 3. 



Found in the caves of AdYianopk and other peaces, diaphanous, 

 admitting a polifh, appearing a little greafy, milk-vvhite> 

 with red, rofyi yellow, brown or ciilereous veins, ilripes or 

 fpot?, fometimea cinereous, red, yellow, brown, rarely blud. 



16. PISOLITHUS. Confifting of carbonate of 

 lime, a very fmall proportion of fand and oxyde 

 of iron, carbonic acid gas^ and water: fofti 

 opake, v^ithoiit luftre internallyj breaking into 

 indeterminate fragments, and feparating into 

 fpherical granulations : of a centrically lamellat^ 

 texture: found about warm fprings. 



CiwiicUPo PiSOLITHUS. 



Tophus oolithus, Sy(l. nat. xiii 3. /. 189. «. 14* 



Oolithus. H'^all. J'yji. 2. />. 384. n. 7. a. 



Pifa Carolina. Worm. MuJ\ 52. 



Oolite and Pifolite. SchmeiJJer mineraU i. p* 219. 



Compact limeilone, var. 3. Kir-wan miner. i%p. 82* 



Pifolite. Tbomjon chemijiry., 3, p. 610. 



Found near the warm fprings o'i Carlsbad '\n Bohemia^ in Silejid 

 and Hungary in the form of round mafl'es compofed of con- 

 centric layers, each containing a grain of fand in its centre : 

 colour white oir yellowifli-whitej brownifh, reddifh or yel- 

 lowifh. 



17. MARMOR. Confiftlng of carbonate of lime^ 

 carbonic acid gas, and water : hardifli, meagre 

 to the touch, of a common form, lightifhj com- 

 pofing whole mountains or the greater part of 

 thf m, or in detached pieces : burning into 

 quicklime, folublc for the greater part in acidsj 

 with efFei vefcence. 



Hamm'test Opake, without luftrc, compa6t, confifling of accreted 

 round granulations, 

 Marmor granis globulis, SyJ}. nat, xii. 3. p^ 43, «, 12. 

 Ketien itone, So^<.verby Brit, min, p. 17. tab. 8. 

 Coiiip,^(fl limeilone. Kirnjjan mineraU i. p% 82. 

 Ooluims. It Gotl. 2O6. 

 Puolii'ius, Fogel mineral. 256, 



VOL* Vil. — M 



