V2. Report of Progress in 1879. 8 Vo. pp. 232. The Geology of Clarion County by H. Martyn Chance, with colored geologcial map of county, a map of the Anticlinals and Oil Belt, a contoured map of the Old River Channel at Parker.83 local sections figured in the text, and 4 page plates. Price, $0 43; postage,$0 12
PETROLEUM FIELDS.
I. Report of Progress in the Venango County District-1874. By John F.Carll. With Observations on the Geolgy around Warren by F. A. Randall; and notes on the Comparative Geology of North-easetern Ohio and North-western Pennsylvania, and Western New York, by J.P. Lesley. 8 vo., pp. 127, with 2 maps, a long section, and 7 cuts in the text. Price in paper, $0 60; postage, $0 05.
I2. Report of Progress, Oil. Wells, Records,and Levels—1876-7. By John F.Carll Pp.398. Published in advance of Report of Progress, III. Price $0 60; postage $0 18.
I3. Report of Progress—1875 to 1879. Geology of the Oil Regions of Warren, Venango, Clarion and Butler Counties, including surveys of the Garland and Panama Conglomerates in Warren and Crawford counties and in Chautaugua county, New York, with descriptions of oil well rig and tolls, and a discussion of the preglacial and postglacial drainage of theLake Erie Country; with Atlas. With maps and charts of Oil Regions. By John F. Carll. Price, $2 30: postage, £0 30.
I4. Geological Report of Warren County and neighbouring Oil Regions, with additional oil well records—1880–3. By John F. Carll, with colored geological map of Warren county. two sheets of oil well sections, and a map of the Warren oil region. 439 pages. Price, $1 12; Postage, $0 20.
J. Special Report on the Petroluem of Pennsylvania—1874, its Production, Transportation, Manufacture, and Statistics. By Henry E. Wrigley. To which are added a Map and Profile of a line of levels through Butler, Amstrong, and Clarion Counties, By D. Jones Lucas: And also a Map and Profile of a line of levels along Slippery Rock Creek, by J.P. Lesley. 8 Vo., pp. 122; 5 maps and sections, a plate and 5 cuts. Price in paper $0 75:Postage, $0 06.
K. Dunkard Creek Oil District Greene County. By J. J. Stevenson. (See Reports Bituminous Coal Fields.)
L. Appendix II. A Report on the usse of Natural Gas in Iron Manufacture. By John B Pearse. (See Miscellaneous Reports.)
Q2. Descriptions of Oil Measures in and adjacent to Lawrence county. By I.C. White (See Reports Bitumiuous Coal Fields.)
Q4. Description of Oil Measures in and adjacent to Eire and Crawford Counties. By I. C. White. (See Reports North-western Pennsylvania.)
R. Description of the Bradford Oil District in McKean county with a reference to the probable position of the Oil Sands in Elk county. By Chas. A. Ashhurner. (See Reports Bituminous Coal Fields.)
V2. Descriptions of The Oil Measures in Clarion County. By H. M. Chance. (See Reports Bituminous Coal Fields.)
NORTH-WESTERN PENNSYLVANIA.
Q4. Report on Progress—1879. The Geology of Erie and Crawford Counties, with tables of barometric heights in each township, and notes on the place of the Sharon Conglomerate in the Palæozoic series. By I. C.
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