O 2 . Catalogue of the Geological Museum. By Charles E.Hall. Part 

 II. 1. Collection of rock specimens, Nos. 4265 to 8974. 2. Palseontological 

 specimens. Price, $0 40 ; postage, $0 12. 



P. 1879 — Atlas of the Coal Flora of Pennsylvania and of the 

 Carboniferous Formation throughout the United States. 87 plates 

 with explanations. By Leo Lesquereux. Price, $3 35 ; postage, f 22. 



PP. Upper Carboniferous Flora of West Virginia and S. W. 

 Pennsylvania, with 38 plates and text. By Wm. Fontaine, A. M., and I. C. 

 White. Price, $2 25 ; postage, $0 17. 



Q, Report of Progress in the Beaver River District of the Bitu- 

 minous Coal Fields of Western Pennsylvania. By I. C. White ; pp. 

 337, illustrated with 3 Geological maps of parts of Beaver, Butler, and Alle- 

 gheny Counties, and 21 -plates of vertical sections — 1875. Price, $1 40 ; post- 

 age, $0 20. 



QQ. Report of Progress in 1877. The Geology of Lawrence County, 

 to which is appended a Special Report on the Correlation of the Coal 

 Measures in Western Pennsylvania and Eastern Ohio. 8 vo., pp. 336, with 

 a colored Geological Map of the county, and 134 vertical sections. By I. C. 

 White. Price, $0 70 ; postage, $0 15. 



QQQ. Report of Progress in 1878. 8 vo., pp. 233. The Geology of 

 Mercer County, by I. C. White, with a colored geological map of county, 

 and 119 vertical sections. Price, $0 60 ; postage, $0 11. 



B. Report of Progress. The Geology of McKean County, and its con- 

 nection with that of Cameron, Elk, and Forest. By Chas. A. Ashburner. Pp. 

 370. Illustrated by 33 page plates and 2 maps, and accompanied by an atlas 

 containing 8 sheets of maps and sections. Price of report, $0 75 ; postage, $0 16. 

 Price of maps, $0 95 ; postage, $0 07. 



V. Report of Progress — 1878. Part I. The Northern Townships of But- 

 ler county. Part II. A special survey made in 1875, along the Beaver and 

 Shenango rivers, in Beaver, Lawrence, and Mercer Counties. 8 vo., pp. 248, 

 with 4 maps, 1 profile section and 154 vertical sections. By H. Martyn 

 Chance. Price, $0 70 ; postage, $0 15. 



VV. Report of Progress in 1879. 8 vo., pp. 232. The Geology of Clar- 

 ion County, by H. Martyn Chance, with colored geological 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. 



Other Reports of the Survey are in the hands of the printer, and will soon 

 be published. 



The sale of copies is conducted according to Section 10 of the Act, which 

 reads as follows : 



* * * "Copies of the Reports, with all maps and supplements, 



shall be donated to all public libraries, universities, and colleges in the State, 

 and shall be furnished at cost of publication to all other applicants for 

 them.'''' 



Mr. F. W. Forman is authorized to conduct the sale of reports ; and letters 

 and orders concerning sales should be addressed to him, at 223 Market street, 

 Harrisburg. Address general communications to Wm. A. Ingham, Secretary. 



By order of the Board, 



WM. A. INGHAM, 

 /Secretary of Board. 

 Rooms of Commission and Museum : Address of Secretary : 



22S Market Street, Harrisburg. 223 Market Street, Harrisburg. 



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