GLACIAL HISTORY OF NANTUCKET AND CAPE COD 711 



The following topics are discussed in detail : 



Nantucket; preglacial formations; interglacial formations; the Sankaty 

 Head deposits; the late Wisconsin ice-sheet; the four zones (marginal) : 1, 

 kame hills ; 2, fosse ; 3, ice-contact slope, and, 4, apron plain. Detailed descrip- 

 tion of these and tracing of ice-contact slope ; peculiarities of Miacomet valley ; 

 postglacial deposits and changes in elevation ; associated phenomena of Marthas 

 Vineyard and Block island. 



Upper cape Cod and associated phenomena of Elizabeth islands and Fishers 

 island. 



Gape Cod lake (third stage of Nantucket lobe) ; lower cape Cod; the sand 

 plains of Eastham, Wellfleet, Highlands, and Truro ; the morainal dam ; the 

 cols or outlets, the three stages of the lake : 1, Wellfleet ; 2, Highlands ; 3, 

 Truro ; summary. 



The paper has been published as volume i, Geological Series, Columbia 

 University Press. 



Kemarks were made by A. C. Lane. 



The second paper was 



ICE BORNE SEDIMENTS IN MINAS BASIN 

 BY J. A. BANCROFT* 



In absence of the author the following paper was presented in abstract 

 by W. M. Davis : 



GEOLOGY OF THE LOWER COLORADO RIVER 

 BY WILLIS T. LEE 



Comments were made by Professor Davis. The paper is printed as 

 pages 275-284 of this volume. 

 The next paper was 



CRETACEOUS SECTION IN THE MOOSE MOUNTAINS DISTRICTS, SOUTHERN 



ALBERTA 



BY D. B. DOWLINGf 



The paper is printed as pages 295-302 of this volume. 

 The following paper was presented : 



GEOLOGY AND PALEONTOLOGY OF NORTHERN CANADA 

 BY H. M. AMI 



The paper contains notes bearing on the collection recently obtained by Com- 

 mander A. P. Low, of the Geological Survey of Canada, in northern Canada, 



* Introduced by F. D. Adams, 

 t Introduced by H. M. Ami. 



