204 FLINT GENUS. THIRTY-FIRST SPECIES, ■ . i.imvF' * wmtK tiro: y: - ' ij , : li ; ioqlLi Oi Prelinite.yJ if;qo moit Prehnite, Werner. Wid. f. 357. Id. Kiriv. vol. 1. p. 274. Id. EJlner. b. 1- f. 488. Id. Emm. b. 1. f. 192 Prenite, Nap. p. 235’ Lam. t. 2. p. 311—La Prehnite, Broch. t. 1. p. 29S' Id. Hauy, t. 3. p. 167. External Characters. > Its colours are greenifh white, greenifh grey, moun tain green, and apple green, which latter fome- times approaches to grafs green ; alfo yellowifh g re y „ and yellowifh green. It is fometimes maffive, fometimes cryftallifed in oblique four-fided- tables, which are pretty often truncated on the acuter angles. "When thefe trunca tions incieafe,a longifh fix-fided table is formed; when this table becomes thicker, there is formed a four* • 1 iided prifm bevilled on both extremities, the bevi - ling planes are fet 011 the fmaller lateral planes, and the edge of the bevillment is truncated.