TITLES OF PAPERS PRESENTED 605 



strata should be found as thick there as on the inner and outer lowland. This 

 suggests that search should be made for such local thickening of the covering 

 strata; if found, it could be accepted as decisive evidence of subaerial denudation 

 of the arch. 



The paper was also discussed by M. R. Campbell and C. W. Hayes. 



The remaining papers of the program were read by title, as follows : 



GEOLOGICAL STRUCTURE OF COFFEYVILLE (KANSAS) GAS FIELD 



BY G. PERRY GRIMSLEY 



SURFACE TEMPERATURE OF THE EARTH 



BY ALFRED C. LANE 



GLACIATION OF MOUNT KTAADN, MAINE 



BY RALPH S. TARR 



This paper is printed as pages 433 to 448 of this volume. 



POST-GLACIAL TIME IN HURON COUNTY, MICHIGAN 

 BY ALFRED C. LANE 



This paper is printed in Reports of the Geological Survey of Michigan, 

 1900, volume vii, part ii, chapter 4. 



KEEWATIN OF EASTERN CENTRAL MINNESOTA* 



BY C. W. HALL 



KEWEENAWAN OF EASTERN CENTRAL MINNESOTA* 



BY C W. HALL 



GEOLOGY OF QUEBEC CITY AND ITS ENVIRONS 



BY HENRY M. AMI 



GAS WELL SECTIONS IN UPPER MOHAWK VALLEY AND CENTRAL NEW YORK 



BY CHARLES S. PROSSER 



This paper is printed in the American Geologist, March, 1900, volume 

 xxv, pages 131-162. 



VERTEBRATE FOOTPRINTS ON CARBONIFEROUS SHALES OF PLAINVILLE, 



MASS A CH USE TTS 



BY J. B. WOODWORTH 



This paper is printed as pages 449 to 454 of this volume. 



* These papers will probably be published in volume 12. They could not be completed in time 

 for this volume. 



