92 PROCEEDINGS OF THE AXX ARBOR MEETING 



outside the ice-sheet and resultant floating of erratics beyond the ice-border 

 can be postulated. Some of the boulders are found on the highest divides, in 

 situations where no land barrier could have ponded v^rater outside the ice- 

 border. Such is the case with boulders in high uplands south of Clinton, 

 Kansas, and others near Tipton and Jefferson Citj', Missouri. 



Presented in full extemporaneonslv. 



GLACIAL DRAINAGE OX THE COLUMBIA PLATEAU OF WASHIXGTOX 



BY J. HARLEX BRETZ 



Presented in full extemporaneoush'. 



Brief remarks were made by Messrs. Leverett, Leighton. and Meinzer. 

 with reply by the author. 



GLACIAL LAKE PROBLEMS 

 BY GEORGE H. CHAD WICK 



(Ahstract) 



A discussion of some obscure features in the Laurentian Lake history, such 

 as the probable outlet of Lake Wayne and its relation to Lake Vanuxem, with 

 description of some hitherto unnoticed outlets and levels in New York State, 

 and preliminary correlation charts as a basis for further work. 



Presented in full extemporaneously. 



Brief remarks were made by Mr. Leverett, with reply l)y the author. 



ICE ACTIOX OX IXLAXD LAKES 

 BY IRVI^sG D. SCOTT ^ 



(Ahstract) 



The shove of ice on the shores of lakes of moderate size has been ascribed 

 to both expansion of the ice during the winter and to wind-blown jams in the 

 spring. The results of a study of the effects of these processes on the inland 

 lakes of Michigan and a consideration of the relative effectiveness of the two 

 processes will be presented in this paper. 



Eead by title. 



BAXDED POSTGLACIAL CLAY XEAR XEW YOh'K CITY 

 BY CHESTER A. REEDS 



(Ab.'itruct) 



For two weeks during the month of September, 1922. varve clay, similar to 

 that described by De Geer, Liden, and Antevs in Sweden, Sauramo in Finland, 

 and De Geer and Antevs in America, was studied by the writer in the clay 



1 Introduced by W. H. Hobbs. 



