BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 30, pp. 143-164 March 31, 1919 



PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



PROCEEDINGS OF THE TENTH ANNUAL MEETING OF THE 

 PALEONTOLOGICAL SOCIETY, HELD AT BALTIMOEE. 

 MARYLAND, DECEMBER 28, 1918. 



R. S. Bassler^ Secretary 



CONTENTS 



Page 



Session of December 28 I44 



Report of the Council I44 



Secretary's report I44 



Treasurer's report I45 



Appointment of Auditing Committee 146 



New business 146 



Necrology I47 



Election of oflScers I47 



Presentation of papers on paleontology 147 



Relation of the Holochoanites and the Orthochoanites to the Pro- 

 tochoanites and the significance of the Bactritidse [abstract and 



discussion] ; by Amadeus W. Grabau 148 



Inclusion of the Pleistocenic period in the Psychozoic era [abstract 



and discussion] ; by Amadeus W. Grabau 149 



Philosophical aspects of paleontology ; by John M. Clarke 150 



Characters and restoration of Cope's Sauropoda ; by Henry Fair- 

 field Osborn 151 



Camarasaurus and Amphicoelias from Canon City ; by Henry Fair- 

 field Osborn and Charles C. Mook 151 



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



Kuowlton. 151 



Report of the Auditing Committee 151 



Continuation of paleontologic papers 152 



Orthogenetic development of the Cost£e in the Perisphinctinge [ab- 

 stract] ; by Marjorie O'Connell 152 



Discovery of the Oxfordian in M^estern Cuba [abstract] ; by Bar- 



num Brown and Marjorie O'Connell 152 



A new Eurypterid horizon [abstract] ; by George Halcott Chad- 

 wick , 152 



Economic value of paleontology ; by Ralph Arnold I53 



Presentation of papers on stratigraphy I53 



Age of certain plant-bearing beds and associated marine forma- 

 tions in South America [abstract] ; by Edward W. Berry 153 



Typical section of the Allegheny formation [abstract] ; by Charles 

 K. Swartz and Harvey Bassler I53 



(143) 



