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562 BITUMINOUS FAMIir. Second Subspecies. Slaggy Mineral Pitch. Schlackiges Erdpech, Werner. of the Greeks, Aristotelis, lib. de Min. Ascnlt. expl. a J. Beckman, Gott. 1786, 4to, p. 280.—Bitumen, Plin. Hist. Nat. xxxv.—Bitumen solidum coagulatum friabile, Asphaltum, Wall. t. ii. p. 93.—Asphalte, ou Bitume de Judee, Horn/: de t. ii. p. 592. Id. De Born, t. ii. p. 78.—Bergpech, ou Judenpccli, Wid. s. 624.—Asphaltum, or Compact Mineral Pitch, Kim. vol. ii. p. 46.—Asphaltum, Hatchett, Lin. Trans, vol.iv. p. 132. —Schlackiges Erdpech, Eslner, b. iii. s. 110. Id- Emm. b. ii. s. 50.—Asphalte, Lam. t. ii. p. 533. 635.—Bitume solide, Haup, t. iii p. 313.—La Poix minerale scoriacce, Broch. t. ii. p. 66.—Schlackiges Bergpech, Reuss, b. iii. s. 113. Id. Lud. b. i. s. ig3. Id. Suck. 2ter tli. s. 48. Id. Bert. s. 343. Id. Mohs, b. ii. s. 307-—Bitume asphalte, Brong. t. ii. p. 25. Schlackiges Erdpech, Leonhard, Tabel. s. 48. Id. Karsten, label, s. 58. Id. Lenz, b. ii. s. 1052.—Compact Mineral Pitch, Atkin, p. 3. External Characters. i Its colour is velvet-black, which sometimes approaches to brownish-black. It occurs massive, disseminated, and globular. Internally it is splendent and shining; often glistening, and the lustre is resinous. The fracture is either imperfect, or very perfect con- choidal. The fragments are pretty sharp-edged. It is very soft, passing into s&ft. It is opaque. It