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REPORT OF NATIONAL MUSEUM, 



California deposits have in times past been worked at Clear Lake, in 

 Modoc County, in Colusa County, in Tehama County (Specimen No. 

 30118, U.S.N.M.), and in Napa County (Specimen No. 67697,U.S.N.M.). 

 The Louisiana deposits lie in strata of Quaternary age, and are derived 

 from gypsum. The following facts relative to this deposit are from 

 Professor Kemp's paper, already alluded to : 



Probably the richest and geographically the most accessible of the American 

 localities is in southwestern Louisiana, 230 miles west of New Orleans and 12 miles 

 from Lake Charles. The first hole which revealed this sulphur was sunk in search 

 of petroleum, of which the presence of oil and tarry matter on the surface were 

 regarded, quite justly, as an indication. While more or less of these bituminous 

 substances were revealed by the drill, the great bed of sulphur is the main object of 

 interest. A number of holes have since been put down with the results recorded 

 below, and they leave no doubt that there is a very large body which awaits exploi- 

 tation. The first explorations were made by the Louisiana Petroleum and Coal Oil 

 Company. It was succeeded by the Calcasieu Sulphur and Mining Company. The 

 Louisiana Sulphur Mining Company followed, and now the owners are the American 

 Sulphur Company. The records of four holes are appended. Nos. 1 and 2 were the 

 first sunk, and were about 150 feet apart. Nos. 2, 3, and 4 were put down in 1886. 

 No. 3 is northwest of No. 1. 



Records of several of the bore holes that have penetrated the sulphur bed. 



o Stopped in sulphur. 



Analyses from the large bed in holes No. 2 and No. 3 gave the 

 following: 



