66 PROCEEDINGS OF THE PITTSBURGH MEETING 



TWO GLACIERS IN ALASKA 

 BY LAWRENCE MARTIN 



Presented in abstract from notes, with lantern slides. Discussed by 

 E. S. Tarr and A. H. Brooks, with reply by the author. 



A SYSTEM OF QUATERNARY LAKES IN THE MISSISSIPPI BASIN 

 BY E. B. SHAW" 



Read in full from manuscript and illustrated with diagrams. Dis- 

 cussed by W. M. Davis, F. B. Taylor, and E. D. Salisbury, with reply by 

 the author. 



AFTONIAN MAMMALIAN FAUNA II 

 BY SAMUEL CALVIN 



Presented in abstract from notes. 



E. 0. Hovey returned from the other section and resumed his duties 

 as secretary. 



RADIATION OF GLACIAL FLOW AS A FACTOR IN DRUMLIN FORMATION 

 BY WILLIAM C. ALDEN 



Eead in full from manuscript and illustrated with charts. Discussed 

 by H. L. Fairchild. 



NOTES ON A NEW METHOD OF CALCULATING THE DATE OF THE GLACIAL 



EPOCH 



BY RUFUS M. BAGG, JR. 



Eead by title in the absence of the author. 



PHYSIOGRAPHIC STUDIES IN THE SAN JUAN DISTRICT OF COLORADO 

 BY WALLACE W. ATWOOD 



Presented without manuscript and illustrated with diagrams. Dis- 

 cussed by W. M. Davis and F. W. Eich. 



GEOGRAPHICAL DESCRIPTIONS IN THE FOLIOS OF THE GEOLOGIC ATLAS OF 



THE UNITED STATES 



BY W. M. DAVIS 



Eead by title at the request of the author. 



"Introduced by David White. 



