478 I'KOCEEDINGS OF THE NEW YORK MEETING 



1874 (57). Coal Measures shales in Lower Davenport limestone, Davenport, Iowa. 



Roof of cavern partially preserved. Iowa Geological Survey, volume 

 ix ; Geology of Scott county, Iowa. 



Four [4) views jjreseMied by T. C. Hopkins 

 Size, So by il inches 



1875 (1). View on the Ohio River bluff opposite Beaver, showing concentric 



weathering in shale. The weathering from the joints shows concen- 

 tric peeling off on a large scale, with smaller concretionary masses 

 inside. T. C. Hopkins, State College, Pennsylvania, August, 1897. 



1876 (2). View on the Ohio River bluff opposite Beaver, Pennsylvania, showing 



concentric weathering in shale (Coal Measures). T. C. Hopkins, State 

 College, Pennsylvania, August, 1897. 



1877 (3). View of a shale bluff on Block House run. New Brighton, Pennsylvania, 



showing concentric weathering. Shaleof lower Coal Measures. T. C. 

 Hopkins, State college, Pennsylvania, August, 1897. 



1878 (4). View showing concentric weathering in shale (Coal Measures) on the 



Ohio River bluff at Rochester, Pennsylvania. T. C. Hopkins, State 

 College, Pennsylvania, August, 1897. 



Announcements regarding the annual dinner were made by Dr E. 0. 

 Hovey and concerning mail and railroad certificates by Professor J. F. 

 Kemp. 



The first two papers of the morning session were read by the author 

 and discussed together. 



RELATIONS OF TERTIARY FORMATIONS IN THE WESTERN NEBRASKA REGION 



BY N. H. DARTON 

 SHORELINES OF TERTIARY LAKES ON THE SHORES OF THE BLACK HILLS 



BY N. H. DARTON 



In discussion of the two papers remarks were made by G. K. Gilbert, 

 G. M. Dawson, and A. C. Gill. 



The following paper was read : 



GENERAL GEOLOGY OF THE CASCADE MOUNTAINS IN NORTHERN WASHINGTON 



BY I. C. RUSSKLL 



Remarks were made by Bailey Willis, S. F. Emmons, G. M. Dawson, 

 and the author. 



The Society then adjourned for the noonday recess and lunch and re- 

 convened at one o'clock p m. 



