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I WOLFRAM. 549 2. Wolfram. Wolfram, Werner. Magnesia cristallina ; Spuma Lupi, Wall. t. ii. p. 344. Wol fram, Wern. Pabst. b. i. s. 223. Id Wid. s. 983. Id. Kirtv. vol. ii. p. 316. Id. De Born, t. ii. p. 227- Id. Emm. b. ii. s. 574. Id. Lam. t. i. p. 404. Id. Broch. t. ii. p. 456.— Sclicelen ferrugin£, Hatty, t. iv. p. 314. Wo.fram, Reuss, b. iv. s. 541. Id. Lud. b. i. s. 303 — Eisen-Schecl, Sack. 2ter t h. s. 461.—Wolfram, Bert. s. 50<). Id. Molts, b. iii. s. 61 S.-— Scheelin fcrrugine, I.ucas, p. 182.—Wolfram, Leon- hard, Tabcl. s. 81.—Schcelin ferrugine, Brottg. t. ii. p. 94. Id. Brard, p. 388.—Wolfram, Karslcn, Tabcl. s. 74.—Sehee- lin ferrugin£, Hatty, Tabl. p. 118.—Wolfram, Kid, vol. ji. p. 226. Id. Aikin, p. 66. , External Characters. Its colour is intermediate between dark greyish-black and brownish black, which sometimes inclines to velyet- Iduck. It occurs massive, disseminated, in plates, and crystalli z'd in the following figures: 1. Flat rectangular four-sided prism, acuminated on lioth extremities with four planes, .which are set 011 the lateral edge? ; sometimes the summits of the acuminations are truncated *, Fig 270. 2. The lateral edges of the preceding figure are trun cated, as in Fig. 271 +. M m 3 3. When * Schcelin fcrrugine epointf, ITauv. t Schcelin"fcrrugi 116 uniMnairc, Hauy.