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GRAPHITE FAMILY, occurs, not only in beds, along with strata of greenstone, slate-clay, clay-ironstone, and bituminous-shale, in the coal formation of that district, but also imbedded in the greenstone; about four miles from New Cumnock, also in Ayrshire, there is a bed of columnar glance-coal, from three to six feet thick, in which the columns are arranged in rows ike basalt, and which is intermixed with compact, scaly, and columnar graphite. Both the graphite and columnar glance-coal are contained in the coal formation, and in some places, cotemporaneous masses of greenstone are imbedded in the coal *. It occurs also at the Meissner in Hessia, where it is associated with conchoidal glance- coal, pitch-coal, brown-coal, bituminous wood, and earth, coal, and covered with greenstone and basalt. 2. Graphite. Graphit, Werner. Ferrum molybdena, Wall. t. ij. p . ^9—Plotnbagine, Rome do * ’ *• - P-. 500. Id. Be Born, t. ii. p. 295,-Graphites plumbago, Lin. Syst. Nat. edit. 13. cura Jo. Frid. Gmelin, t m. p. 284. Plumbago, Kirn,, vol. ii. p. 58._Gra P hit, Emm. b.n. s. 97. Id. Wid. s. 651.-Graphite, Brack, t. ii. p. 76. Fer carbure, Hauy, t . iv. p. 98—Graphite, Rcuss, b. iu. 3. s. 176. Id. Lud. b. i. s . 196. Id. Suck. 2t S r th . s . 73. Id. Bert. s. 335. Id. Mohs, b. ii. s. 327. Id. Leonhard, S - 50- Plumbago, Kid, vol. ii. p. 58. Id. Aikin, p. 6. This species is divided into two subspecies, viz. Scaly Graphite, and Compact Graphite. First 162. Jameson’s Mineralogical Description of Dumfriesshire, p. 160, 161)
