Eepoet on the Mines and Mining Exhibit. 331 



II. Cattaeaugus County Field. 

 The territory in tins county is a continuation of the Bradford iield 

 and comprises part of the towns of Carrollton, Allegany and Olean. 

 The first drilling was done at Limestone in 1865, followed soon after 

 by exploration at Rock City, Four Mile and Knapp's Creek. The field 

 may best be considered by dividing it into two, viz. ; A. Bradford 

 (proper) ; B. Allegany town. 



A. Bradford. — This portion of the field covers about thirty square 

 miles, its greatest length being twelve and one-half miles, and its aver- 

 age breadth being two and one-half miles. There are now some 1,850 

 producing wells yielding about six-tenths of a barrel each daily. In 

 depth they run from 1,600 to 1,800 feet with 18 to 60 feet of good oil 

 sand, although it often happens that the oil sand is badly broken up by 

 shale and slate. 



B. Allegany Town. — This field is comparatively new, having been 

 opened about five years ago. It is situated in the town of Allegany 

 along the Allegany river, and is about five miles long by one and 

 one-half wide. There are now about 175 producing wells yielding 

 each about three barrels daily. The oil sand runs about 18 to 25 feet 

 thick, while the wells are 1,000 to 1,200 feet deep. At the start the 

 output ran as high as forty barrels per well. So far no connection has 

 been made with the Bradford, but there is no reason why it will not be 

 made some day should the price of oil go up to allow drilling to pay. 



Conteibutoes of Peteolbum. 



R. Allen, Alma, Allegany county. 

 Allen & Sternberg, Bolivar. 

 Andrus & Sons, Bolivar. 

 Davis & Torrey, Alma. 

 Mr. Laubenthal, Allegany. 

 Mr. McDonald, Alma. 

 I. Miles, Scio. 



Mr. Mulken, Richburgh. 

 Mr. Norton, Scio. 

 W. J. Penny, Greenwood. 

 Rufus Scott, Bolivar. 

 Sherley & Hostetter, Alma. 

 Mr. Sims, Four Mile. 

 Union Oil Co., Alma. 



BUILDING STONES. 



GEOUP 44. 



The State exhibit consisted of ten-inch cubes, dressed on the differ- 

 ent faces in various ways, in order to show the possibilities of the stone 

 for commercial purposes. Besides these there were slabs of slate and 

 flagstone. In addition to the exhibit in the mining pavilion a series of 

 four-inch cubes was contributed to the department exhibit in the gallery, 

 where the building stones from all the States in the Union were 

 represented. 



The building stones of New York have been carefully studied and 

 described by Prof. John C. Smock, and his results are embodied in 

 Bulletins Nos. 3 and 10 of the New York State Museum. The follow- 

 ing report on the bluestone industry, by Mr. Wm. G. Eberhardt, E. M., 

 covers ground not touched upon by Prof. Smock. 



