TABULAR VIEWS OF MINERAL SYSTEMS. 461 1 HAUSMANN’s MINERAL SYSTEM, in 1813. Class I.—COMBUSTIBLES. 1. Order. Inflammabiles. Non-Metallic Combustibles, 1. Sub-Order,—Simple,—Ex. Diamond, &c. 2. Sub-Order,—Compound. Combinations of two or more non-Metalliic Combustibles, —Ex. Graphite, &c. 2. Order. Metals. Native Metals and Alloys.—Ex. Native Silver and Anti• monial - Silver. 3. Order, Ores. Combinations of Metals and Sulphur.—Ex. Copper-Py« rites. Class II.