THE A RA PA HOE GLA CIER 8 5 I 



This assumption is evidently absurd, and it becomes necessary 

 to assume that a considerable interval elapsed between the 

 uplift and the advent of a glacial climate. The supposition may 

 still be made that the glaciation followed close upon another 

 and later uplift. The significance of the observations in this 

 particular terraced valley is not in excluding hypotheses of later 

 uplifts, but in making clear the time relations between the uplift 

 here exemplified and the coming on of the glacier. 



N. M. Fenneman. 

 University of Colorado. 



