VI BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 Presidential address by Whitman Ceoss : Geology in the war 



and after 117 



Vice-Presidential address b}' Geobge H. Peekins : Physiog- 

 raphy of Vermont 117 



Register of the Baltimore meeting, 1918 117 



Officers, Correspondents, and Fellows of the Geological Society of 



America 119 



Constitution, By-Laws, and Publication Rules of the Society 131 



I'roceedings of the Tenth Annual Meeting of the Paleontological Society, 

 held at Baltimore. Maryland, December 28, 1918 ; R. S. Bassleb, Secre- 

 tary 143 



Session of December 28 144 



Report of the Council 144 



Secretary's report 144 



Treasurer's report 145 



Appointment of Auditing Committee 146 



New business 146 



Necrology 147 



Election of officers 147 



Presentation of papers on paleontology 147 



Relation of the Holochoanites and the Orthochoanites to the 

 Protochoanites and the significance of the Bactritidne [ab- 

 stract and discussion] ; by Amadeus W. Geabau 148 



Inclusion of the Pleistocenic period in the Psychozoic era [ab- 

 stract and discussion] ; by Amadeus W. Geabau 149 



Philosophical aspects of paleontology ; by John M. Claek . . . 150 

 Characters and restoration of Cope's Sauropoda ; by Heney 



Faiefield Osbobx 151 



Camarasaurus and Amphicoelias from Canon City : by Hexey 



Faiefield Osboex and Chaeles C. Mook 151 



Climates of the past [abstract] : Presidential address by F. H. 



Knowltox 151 



Report of the Auditing Committee 151 



Continuation of paleontologic papers 152 



Orthogenetic development of the Costce in the Perisphinctinse 



[abstract] ; by Maejoeie O'Coxxell 152 



Discovery of the Oxfordian in western Cuba [abstract] : by 



Baexum Beowx and Maejoeie O'Coxxell 152 



A new Eurypterid horizon [abstract] : by Geobge Halcott 



Chadwick 152 



Economic value of paleontology : by Ralph Aexold 153 



Presentation of papers on stratigraphy 153 



Age of certain plant-bearing beds and associated marine 

 formations in South America [abstract] ; by Edwaed W. 



Beeey 153 



Typical section of the Allegheny formation [abstract] ; by 



Chaeles K. Swaetz and Hae^-ey Basslee 153 



Stratigraphy and correlation of the Coal Measures of Mary- 

 land [abstract] : by Chaeles K. Swaetz, W. A. Peice, Je.. 

 and Haevey Basslee 1 54 



