CONTENTS 



\ 



Proceedings of the Twenty-eighth Annual Meeting of the Geo- 

 logical Society of America, held at Washington, District of 

 Columbia, December 28, 29, and 30, 1915. Charles P. 

 Berkey, Secretary pro tern. ---------- 



Pages 



1-138 



Proceedings of the Seventh Annual Meeting of the Paleontological 

 Society, held at Washington, District of Columbia, December 

 29, 30, and 31, 1915. R. S. Bassler, Secretary - - - 139 



74 



Dry Land in Geology. Presidential Address by Arthur P. 



Coleman 175-192 



BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Subscription, $10 per year; with discount of 25 per cent to institutions and 

 libraries and to individuals residing elsewhere than in North America. Postage 

 to foreign countries in the postal union, forty (40) cents extra. 



Communications should be addressed to The Geological Society of America, 

 care of ,420 11th Street N. W., Washington, D. C, or 77th Street and Central 

 Park, West, New York City. 



NOTICE. — In accordance with the rules established by Council, claims for 

 non-receipt of the preceding part of the Bulletin must be sent to the Secretary of 

 the Society within three months of the date of the receipt of this number in 

 order to be filled gratis. 



Entered as second-class matter in the Post-Office at Washington, D. C, 

 under the Act of Congress of July 16, 1894 



PRESS OF JUDD & DETWEILER, INC., WASHINGTON, D. C. 



