LETTER OF TRANSMITTAL. G 5 . vii 



ferences to all Mr. White's observations on this interesting- 

 topic will be found collected in Index B under the head of 

 4 'Glacial drift." 



I am obliged to repeat what I said in my letter prefixed 

 to Report Q 4 on Erie and and Crawford counties, that as 

 Prof. White's manuscript report exhibits views of the ero- 

 sive ability of moving ice such as those entertained by the 

 ultra glacialists, and in my opinion mischievous (in a purely 

 scientific sense,) I have made myself responsible for the re- 

 moval from the printed text of most of the sentences which 

 embody those views, seeing that they are not statements of 

 fact, but simply expressions of feeling and hypothetical in- 

 ferences. All his observed facts are given in the text, and 

 the reader is left at liberty to draw his own conclusions, un- 

 biassed by glacial theories. 



With great respect, 



Your obedient servant, 



J. P. LESLEY. 



1008 Clinton street, Philadelphia, 



June 17, 1881. 



LETTER 



Prof. J. P. Lesley, 



State Geologist : 



Dear Sir : I herewith transmit my report on Wayne and 

 Susquehanna counties. 



Field work was commenced about the middle of June and 

 continued until the 20th of September. During the last 

 three weeks of my stay in the field an attempt was made to 

 trace the Cascade sandstone westward, for the purpose of 

 determining, if possible, its relations to the Carrollton and 

 Salamanca conglomerates. It was successfully traced into 

 Bradford county and there correlated with the " Chemung 



