Volltext Seite (XML)
( 409 ) FOURTH SPECIES. • i- : Vl':\ Fullers Earth. , Walkererde.—Werner. _ Id. Wid. p. 429 Fuller’s earth, Kirw. vol. 1. p. 184.— Walkerde, EJlner, b. 2. f. 777- Id. Emm. b. 1. f. 375 — Terra da follone, Nop. p. 238.—La Terra a Foulon, Brock, t. 1. p. 464. r . • .1 . . ; - v ' ! d : -q - w in 1 • . * jf ■ ; ’ ’ 1 '' External Characters. Its colours are greenilh white, greenilh grey, olive and oil green. Some varieties exhibit fpotted and llripcd colour delineations. M ifiive. Internally it is dull. Fradture fometimes uneven, fometimes paffing into lar ge conchoidal, ieldom fplintery ; in fome varieties fine earthy, and fometimes Ihews a tendency to fine flaty. Fragments indeterminately angular, blunt edged j a Fo flaty. Ufually opaque. ©ives