LIST OF PUBLI0ATI0K8. 7 



(R. ) Atlas for McKean county of 8 sheets :— Colored geological county 

 map ; three topographical maps ; of Buffalo Coal Company tract, Alton coal 

 basin, and Potato Creek coal basin : map of McKean oil district ; one sheet 

 of columnar sections between Bradford and Ridgway ; and 2 diagram sheets 

 of the Well account and Production account in the Bradford district. 



R 2. Part II, report on township geology of Cameron, Elk and Forest 

 counties, by C. A. Ashburner. 



(R2.) Atlas for Cameron, Elk and Forest counties, of 11 sheets 

 {Published November, 1884, ^^ advaiice of the report) ;— 3 colored geologi- 

 cal county maps ; 1 anticlinal and synclinal map ; 1 topographical map 

 McKean county ; 2 tract maps Forest and Elk counties ; 1 map Straight 

 Creek coal basin ; 2 sheets oil well sections ; and 1 sheet coal sections. 



V. Report on N. Butler county ; and (Part 2) special report on the 

 Beaver and Shenango river coal measures, by H. M. Chance. With a 

 colored geological map of N. Butler ; a contour local map around Parker ; 

 a map of the anticlinal rolls in the 6th basin ; a chart of the Beaver and 

 Shenango rivers ; profile section from Homewood to Sharon ; Oil well 

 records and surface sections ; and 154 cuts in the text. 8°, pp. 248, 1879. 



V 2. Report on Clarion county, by H. M. Chance. With a colored geo- 

 logical county map, a map of the anticlinals and oil- belt ; a contoured map 

 of the old river channel at Parker ; 4 page plates, and 83 cuts in the text 

 80, pp. 232, 1880. 



For the coal basins of Bradford and Tioga counties, see report G. 



For the coal basins of Lycoming and Sullivan, see report G 2. 



For the coal basins of Potter county, see G 3. 



For the coal basins of Clinton county, see G 4. 



For the coal in Wayne county see G 5, and Northern Atlas, Part IV. 



For the East Broad Top coal basin in Huntingdon county, see F. 



For the mountain coals in Blair county, see T. 



For the Broad Top coal measures in Bedford and Fulton counties, see T 2. 



For the coal basins in Centre county, see T 4. 



For coal analyses, see M, M 2, M 3. 



For classification of coals, see in M 2. 



For coal plants, see P, P 2. 



For fossil crustaceans in coal slate, see P 3. 



For Origin of Coal ; Pittsburgh Region and Monongahel a Valley ; Wellers- 

 burg coal basin, Somerset county ; and Tipton Run coal-beds, Blair county ; 

 see Annual Report, 1885, and Atlas H 2 and H 3. 



Grand Atlas Div. Ill, Pt. I, 1885, port-folio containing 35 sheets (26"X32") 

 as follows : 32 sheets relating to portions of the Petroleum and Bituminous 

 Coal Fields, and three sheets relating to the Quaternary period. 



Annual Report, 1886. Part I. 



PETROLEUM AND GAS. 



See reports I, I 2, I 3, I 4, and J, under Bituminous Coal Fields. 



See L, for the Pittsburgh gas well, and the use of gas in the iron manufacture. 



See Q, Q 2, Q, 3, Q 4, for references to oil rocks in Beaver, Lawrence, Mer- 

 cer, Crawford, Erie, and S. Butler counties. 



See K for the Dunkard Creek oil wells of Greene county. 



See R, R 2, for descriptions of oil rocks in McKean, Elk, and Forest 

 counties. 



