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COMMON GALENA OR LEAD-GLANCE. 359 First Subspecies. Common Galena or Lead-Glance. Gemeiner Bleiglanz, Werner. ' Id. Werner, I’abst. b. i. s. 97. Id. Wid. s. 841.—Common Ga lena, Kirni. vol. ii. p. 216.—Gemeiner Bleiglanz, Emm. b. ii. s. 369-—Plomb sulphur6, Galenc, Lam. t. i. p. 289.-292.— Plomb sulplmre, IIany, t. iii. p. 456.—La Galene commune, Brock. t. ; ii. p. 295.—Gemeiner Bleiglanz, Raiss, b. iv. s. 174. Id. Lud.' b. i. s. 258. Id. Suck. 2‘cr tli. s. 306. Id. Bert. s. 445. Id. Mohs, b. iii. s. 469.—Blaettriges Bleiglanz, Hub. s. 126.—Plomb sulpliure, Lucas, p. 114—Gemeiner Blei glanz, Leonhard, Tabel. s. 70 —Plomb sulplmre laminaire, Brong. t. ii. p. 195. Id. Brard, p. 265.—Bleiglanz, Karstcn, Tabel. s. 6S. Id. ITaus. s. 74.—Sulplmrct of Lead, Kid, vol. ii. p. 150.—Plomb sulphurfe, I I any, Tabl. p. 79-—Galena, Aikin, p. 44. ‘ External Characters. Its colour is fresh lead grey of different degrees of in tensity. On the surface, it sometimes shows a tempered- s leel or iridescent tarnish. It occurs most frequently massive, and disseminated •, a Lo in membranes, in angular pieces, in grains, reticula- tp d, specular, corroded, and amorphous, seldom fused- I'ke and cylindrical; frequently crystallised : 1. Cube*. Fig. 219. which is the fundamental figure, ‘ n exhibits the following varieties: Z 4. «• In * Plumb sulphur? primitif, Ilaiiv.