71.—Sulphur.
Occurs in crystals, masses and crusts; brittle; can be easily cut; burns with a blue flame and sulphur odor; gravity 2.
Localities.—Found in limestone and gypsum, and around geysers and sulphur springs. Springport, N. Y.; on the Potomac, twenty-five miles above Washington; Put-in-Bay Island, Lake Erie; Clear Lake, Cal.; Santa Barbara County, Col.; Humboldt County, Nev.