LIST OF PUBLICATIOl^S. 5 



Grand Atlas, Div. II, Pt. II, 1885. Port-folio containing 22 sheets, (26" X 

 32"), as follows : 13 sheets Atlas K'orthern Anthracite Field, Part I, 8 sheets 

 Atlas Eastern Middle Anthracite Field, Part I, and one sheetcontaining a pre- 

 liminary general map of the Anthracite Coal Fields and adjoining counties. 



For Anthracite coal in Sullivan county, see G 2 and Annual Report, 1885. 



For Conglomerate beds near Carbondale, Pittston, &c., see G 5, G 7. 



For Utilization of anthracite slack, see M 2. 



For General description anthracite region, Quaternary Geology of the 

 Wyoming-Lackawanna Valley, &c., &c., see Annual Report, 1885. 



Annual Report, 1886. Part III. 



BITUMINOUS COAL FIELDS AND SURROUNDING AREAS. 



H. First report on Clearfield and Jefferson counties, by F. Piatt. 

 With 8 maps, 2 sections and 139 cuts in the text. S^, pp. 296, 1875. (JF'or 

 second report, see He, 117.) 



H 2. Report on Cambria county, by F. & W. G. Piatt. With 4 maps and 

 sections and 84 cuts in the text. 8^, pp. 194, 1877. 



H 3. Report on Somerset county, by F. & W. G. Piatt. With 6 maps 

 and sections and 110 cuts in the text. ,8°, pp. 348, 1877. 



Atlas to Reports H^ and H^ containing geological maps of Cambria and 

 Somerset counties, with 2 sheets of columnar sections and 1 cross section ; a 

 revision and correction of the semi-bituminous coal section at Wellersburg, 

 Somerset county, and notes on the new mines in Cambria county. 8°, 1889. 



H4. Report on Indiana county, by W. G. Piatt. With a colored geolog- 

 ical county map and 87 cuts in the text. S^, pp. 316, 1878. 



H 5. Report on Armstrong county, by W. G. Piatt. With a colored geo- 

 logical county map and 58 cuts in the text. 80, pp. 338, 1880. 



H 6. Second report on Jefferson county, (^See H above), by W. G. Piatt. 

 With a colored geological county map and 57 cuts in the text. 8^, pp. 218, 

 1881. 



H 7. Second report on Clearfield county, (See H above), by IT. M. 

 Chance. With a colored geological county map, an outcrop map of the 

 Houtzdale basin and 58 cuts in the text. 8°, pp. 197, 1884. 



L Report on Venango county, by J. F. Carll. The geology around 

 Warren, by F. A. Randall. Notes on the comparative geology of N. E. 

 Ohio, N. W. Pa., and W. New York, by J. P. Lesley. With one small map 

 of the Venango oil region, one small map of the region south and east of 

 Lake Erie, one long section of the rocks at Warren, and 7 cuts in the text. 

 80, pp. 127, 1875. 



I 2. Report of oil well records and levels in Venango, Warren, Craw- 

 ford, Clarion, Armstrong, Butler, &c., by J. F. Carll. 8^, pp, 398, 

 1877. 



I 3. Report on the Venango, Warren, Clarion, and Butler Oil Re- 

 gions ; descriptions of rig, tools, &c. ; survey of the Garland and Panama 

 conglomerates, <fec. ; discussion of pre-glacial and post-glacial drainage, by 

 J. F. Carll. With 23 page plates and an atlas. 8°, pp. 482, 1880. 



(I 3.) Atlas of 22 sheets. Map of Venango county, colored geologically ; 

 map of lower oil field (Butler, Armstrong, and Clarion) in two sheets ; 3 

 local contour maps at Franklin, Titusville and Spring Creek ; two maps of 

 N. W. Pennsylvania, showing the past and present drainage ; long section 

 across W. Pennsylvania ; vertical section of the formations from the Upper 



