Lesley.] ^44 [Jan. 19, 



Wasllington. Surveyed in 1875 by J. J. Stevenson and I. C. White. 

 See Eeporl on Greene and Washington, K (1876). A special Report on 

 the colleries of the Monongahela valley will be made by J. S. Wall. 



Wayne. Surveyed in 1880 by I. C. White. See Report on Susque- 

 hanna and Wayne, G 5 (1881). 



Westmoreland. Surveyed in 1876 and 1877 by J. J. Stevenson. 

 See Report on Fayette and Westmoreland K 2 (1877), and on the Ligo- 

 nier valley K 3 (1878). Note. — Report L (1876) gives an account of a 

 special survey of the Connollsville Coke region. 



Wyoming'. Surveyed in 1876 by A. Sherwood. Resurveyed in 

 1883 by I. C. White. See Report G 7, to be published in 1883. 



York. Surveyed in 1874, 1875 and 1876 by P. Frazer. See Reports 

 on Adams and York, C (1876) and C 2 (1877). 



Of the above mentioned Reports, AA, C 3, D 2, D 3, 13, R 



and T, are accompanied by octavo Atlases, containing maps and sec- 

 tions. The following Reports have been published: 



Report A (1875). A history of geological surveying in Pennsylvania. 



Report A 2, on Waste in mining Anthracite, by F. Piatt (1881). 



Report AC on the mining of Anthracite coal, by H. M. Chance, will 

 be put to press this winter (1883). 



Report E, on Azoic rocks, by T. S. Hunt (1878). 



Report J. Special report on Petroleum, 1875. 



Reports B, B 2, M, M 2, M 3 are the successively published re- 

 ports of chemical analyses made for the Survey by F. A. Gentli, S. P. 

 Sadtler, F. A. Genth, Jr., A. S. McCreath and J. M. Stinson. 



Report N. (1878) contains the Levels of the State railroads, canals, 

 roads, &c., collected in 1875, 1876, 1877 by C. Allen. Materials for N 2 

 are largely collected. 



Reports O, O 2 contain th'e catalogue of specimens collected from 

 1874 to 1880. O 3 has not yet been prepared. 



Report P (and Atlas) figures and describes the coal plants, studied by 

 L. Lesquereux, from 1874 to 1880. 



Report P 2 describes the Permian plants of Greene county and West 

 Virginia, by Fontaine and White (1880). 



Report P 3 containing new species of coal plants by Leo Lesquereux 

 and descriptions of articulates and mollusks, by C. E. Beecher, James 

 ILall and E. W. Claypole, will be published in 1883. 



Report Z on the glacial moraines and gravels by H. C. Lewis, is nearly 

 ready for the press. 



The small hand-book or traveling atlas of geologically colored county 

 maps is two thirds prepared, and will be finished in 1883. 



