LOCALITIES.--Found associated with _Silver_, _Spathic Iron_, _Blende_, _Baryta_ and _Quartz_. Carmel, Me.; Lyme, N. H.; Soldier’s Delight, Md.; Aurora, Nev.; San Amedio Cañon and Tulare County, Cal. 6.--ASBESTUS. Occurs finely fibrous, flax-like; flexible, not elastic; silky lustre, sometimes greenish; gravity 3. VALUE.--Used for lining safes and steam-packing, and for making incombustible cloth, lamp-wicks, etc. LOCALITIES.--Found in granite-regions east of the Alleghanies; often with _Serpentine_. Brighton, Dedham, Newbury, Pelham and Sheffield, Mass.; Milford, West Farms, Winchester and Wilton, Conn.; Chester, Mt. Holly and Cavendish, Vt.; Patterson, Phillipstown, Monroe and Staten Island, N. Y.; Brunswick, N. J.; East Nottingham, Goshen and Aston, Penn.; Bare Hills and Cooptown, Md.; Barnet’s Mills, Va. 7.--ASPHALTUM. Occurs massive; brittle; breaking with high lustre like hardened tar, and with curved surface; melts and burns readily with flame and smoke; gravity 1.2, sometimes floats on water. VALUE.--Used for cements and varnishes. LOCALITIES.--Found generally near the surface. Near the coast of Santa Barbara, Cal.; West Virginia, twenty miles south of Parkersburg. 8.--AZURITE. Occurs in crystals and masses with glassy lustre, or earthy and dull; brittle; crackles and blackens, and finally fuses by heat; dissolves with effervescence in nitric acid; gravity 3.5. VALUE.--A valuable ore of copper, containing sixty per cent. LOCALITIES.--Found chiefly in lead and copper mines. Perkiomen lead mine, Cornwall, Phoenixville and Nicholson’s Gap, Pa; near New Brunswick, N. J.; near Mineral Point, Wis.; Polk County, Tenn.; Calaveras and Mariposa Counties, Cal.; near Virginia City, Mont. 9.--BARYTA, OR HEAVY SPAR. Occurs in crystals, plates and masses; powder white; brittle; crackles when strongly heated; not dissolved in acids; easily distinguished by its weight; gravity 4.5, or twice as heavy as _Gypsum_. VALUE.--Used extensively as white paint and in pottery. LOCALITIES.--Found in mining districts, often with lead, copper and iron ores, and in limestone. Piermont, N. H.; Hatfield, Southampton and Leverett, Mass.; Cheshire and Berlin, Conn.; Pillar Point, Rossie, Carlisle, Scoharie, De Kalb, Gouverneur, N. Y.; Fauquier and Buckingham Counties, Va.; Union, Gaston and Orange Counties, N. C.; near Paris, and in Anderson, Fayette, Mercer and Owen Counties, Ky.; on Brown’s Creek and Haysboro, Tenn.; Bainbridge, O.; Scales Mound, Ill.; Prince Vein, Lake Superior; Mine-a-Barton, Mo.; near Fort Wallace, N. M.; Ingo County, Cal. 10.--BITUMINOUS COAL. Occurs in masses, beds or seams; softer and duller than _Anthracite_; often a bright pitchy lustre; brittle, showing a slaty or jointed structure rather than curved surface; powder black; burns readily with yellow flame; by roasting forms coke; gravity 1.5 or less. VALUE.--Used for fuel and the production of gas, coke, carbolic acid and aniline.