— 374 — 



I. Eeport of Progress in the Venango County District. 1874. By 

 John F. Carll. With observations on the Geology around Warren, by 

 F. A. Randall; and Notes on the Comparative Geology of North-eastern 

 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. 



II. Eeport of Progress, Oil Wells, Records, and Levels. 1876—77. 

 By John F. Carll. Pp. 398. Published in advance of Report of Pro- 

 gress III. 



J. Special Report on the Petroleum of Pennsylvania. 1874, its Pro- 

 duction, Transportation, Manufacture, and Statistics. By Henry E. Wrig- 

 ley. To which are added a Map and Profile of a line of levels through 

 Butler, Armstrong, 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. 



K. Report on Greene and Washington Counties. 1875, Bituminous 

 Coal Fields. By J. J. Stevenson, 8 vo., pp. 420, illustrated by 3 sections 

 and 2 county mags, showing the depths of the Pittsburg and Waynesburg 

 coal bed, beneath the surface at numerous points. 



KK. Report of Progress in the Fayette and Westmoreland District of 

 the Bituminous Coal Fields of Western Pennsylvania. 1876. By J. J. 

 Stevenson. Pp. 437, illustrated by 50 wood-cuts and 3 county maps, colo- 

 red. Part I. Eastern Allegheny County, and Fayette and Westmoreland 

 Counties, west from Chestnut Ridge. 



KKK. Report of Progress in the Fayette and Westmoreland District 

 of the Bituminous Coal Fields of Western Pennsylvania. 1877. By J. J. 

 Stevenson, Pp. 331. Part IL The Ligonier Valley. Illustrated with 107 

 wood-cuts, 2 plates, and 2 county maps, colored. 



L. 1875. Special Report on the Coke Manufacture of the Youghio- 

 gheni River Valley in Fayette and Westmoreland Counties, with Geological 

 Notes of the Coal and Iron Ore Beds, from Surveys, by Charles A. Young ; 

 by Franklin Platt. To which are appended I. A Report and Methods of 

 Coking, by John Fulton. IL A Report on the use of Natural Gas in the 

 Iron Manufacture, by John B. Pearse, Franklin Platt, and Professor 

 Sadtler. Pp. 252. 



M. Report of Progress in the Laboratory of the Survey, at Harris - 

 bürg. 1874-75, by Andrew S. M'Creath. 8 vo., pp. 105. 



MM. Second Report of Progress in the Laboratory of the Survey, at 

 Harrisburg, by Andrew S. M'Creath. 1876—78, including I. Classification 

 of Coals, by Persifor Frazer; II. Firebrick tests, by Franklin Platt; 

 III. Notes on Dolomitic Limestones, by J. P. Lesley; IV. Utilization of 

 Anthracite Slack, by Franklin Platt; V. Determination of Carbon in Iron 

 or Steel, by A. S. M'Creath. With 3 indexes, plate, and 4 page plates. Pp. 438. 



N. Report of Progress. 1875—77. 200 Tables of Elevation above 

 tide-level of the Railroad Stations, Summits and Tunnels; Canal Locks 

 and Dams, River Riffles, etc., in and around Pennsylvania; with map; 

 pp. 279. By Charles Allen. 



