ADDITIONS TO THE LIBRAKr. 187 



L. Special Keport on the Coke Manufacture of the Youghio- 

 gheny River Valley in Fayette and Westmoreland 

 Counties, with geological notes of the Coal and Iron-ore 

 Beds, by Franklin Piatt. 8vo. Harrisburg, 1876. 



M. Report of Progress in the Laboratory of the Survey at 

 Harrisburg, by Andrew S, McCreath. 8vo. Harrisburg, 



1875. 



M^. Second Report of Progress in the Laboratory of the Survey 

 at Harrisburg, by A. S. McCreath. 8vo. Harrisburg, 

 1879. 



M3. Third Report of Progress in the Laboratory of the Survey 

 at Harrisburg, by A. S. McCreath. 8vo. Harrisburg, 



1881. 



'N. Report of Progress. Two hundred Tables of Elevation 

 above tide-level of the railroad stations, summits, and 

 tunnels ; canal locks and dams, river riffles, &c., in and 

 around Pennsylvania, by Charles Allen. 8vo. Harris- 

 burg, 1878. 



0. Catalogue of the Geological Museum, by Charles E, Hall. 

 Part 1. 8vo. Harrisburg, 1878. 



O3. . Part 2. 8vo. Harrisburg, 1880. 



P. Description of the Coal Flora of the Carboniferous Forma- 

 tion of Pennsylvania and throughout the United States, 

 by Leo Lesquereux. Yols. i. and ii. (in one vol.). 8vo. 

 Harrisburg, 1880. Atlas. 8vo. Harrisburg, 1879, 



. Yol. iii. 8vo, Harrisburg, 1884 (Text and Plates 



in one vol.). 



P„. The Permian or Upper Carboniferous Flora of West Yir- 

 ginia and S.W. Pennsylvania, by W. M. Fontaine and 

 I. G. White. 8vo. Harrisburg, 1880. 



P3. Ceratiocaridse from the Upper Devonian Measures in 

 Warren County, by C. E. Beecher ; Eurypteridse from 

 the Lower Productive Coal Measures in Beaver County, 

 and the Lower Carboniferous, Pithole Shale, in Yenango 

 County, by J. Hall. 8vo. Harrisburg, 1884. 



Q,. Report of Progress in the Beaver River District of the 

 Bituminous Coal Fields of Western Pennsylvania, by I. 

 C. White. 8vo. Harrisburg, 1878. 



Q^. The Geology of Lawrence County, by I. C. White. 8vo. 

 Harrisburg, 1879. 



Q3. The Geology of Mercer County, by I. C. White. 8vo. 

 Harrisburg, 1880. 



Q^. The Geology of Erie and Crawford Counties, by I. C. White. 

 Discovery of the Pregiacial Outlet of Lake Erie, by J. W. 

 Spencer. 8vo. Harrisburg, 1881. 



