( 477 ) a. Common Compact Limeftone. Gemeiner Dichter Kalkftein.—Werner* Calcareus aequabilis, Walt. t. i. p. 122.—Dichter Kalk ftein, Wid. p. 494. Compaft limeftone, Kirw. vol. 1. p. 82 Gemeiner dichter kalkftein, Emm. t>. 1. f. 437* —Pietra calcarea compacla, Nap. p. 33.—La pierre cal- caire compafte commune, Brock, t. 1. p- 5 2 3* External Charaders. Its moll: common colour is grey, °f which the fol lowing varieties have been obferved : yellowilh, blu- ifli, alh and ftnoke grey. The alh grey patfes into greyifh black, the yellowilh grey into yellowilh brown, and into a colour bordering on cream yellow, and into ochre yellow. It alfo occurs blood, flelh, and peach bloffom red, but this latter colour is very tare. It frequently exhibits veined, zoned, ftriped, clouded, and fpotted colour delineations; it fome- timts alfo prefents on the rents brown and black co loured arborizations *• * A very beautiful afh grey variety, which is found in Cann- dda, (hews a pearly variegated play of colours, whence it is ca ed °psicfcent marble. 1