410 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



Page 

 Session of Friday. A iiLrust 6 415 



Intro<luptoi-.\- remarlvs on coi'rolation of ^Miocene: by Henry Fair- 

 field O.sborn 4I5 



Correlation of the Lower Miocene of California ; l>y Ralph Arnold. 415 



Review of the Miocene and Oligocene favnias of California ; by 

 B. L. Clark ... 416 



Miocene of the Washington-Oregon province and its relation to 

 that of California and other Pliocene areas; by Charles E. 

 Weaver 416 



Vertebrate faunas of the Pacific coast region ; by John C. Mer- 

 riam 416 



Correlation between the Middle and late Tertiary of the South 

 Atlantic coast of the United States with that of the Pacific 

 coast ; l)y E. H. Sellards 416 



Relation of the Miocene mammalian faunas of western United 

 States to those of Europe and Asia; by William D. Matthew.. 416 



Correlation of the Miocene floras of western United States v/ith 

 those of other jNIiocene areas ; by F. H. Knowlton 416 



Flora of Florissant ; by T. D. A. Cockerell , 416 



Faunal geography of the Eocene of California ; by R. E. Dickerson 416 



Recent work on the dinosaurs of the Cretaceous ; by Henry Fair- 

 field Osborn 416 



History of the Aplodontia group : hy W. I*. Taylor 417 



Some problems encountered in the study of fossil birds of the 



west coast ; by L. H. :Miller 417 



Resolution of thanks 417 



Excursions 417 



Session of Tuesday, AuCxUst 3 



The meeting was called to order by Dr. Edward 0. Ulrich, the Presi- 

 dent of the Society, at 2 o'clock, in Bacon Hall, room 20G, University of 

 California. Doctor Ulrich then requested Prof. J. C. Merriam, Vice- 

 President, to take the chair. Professor Merriam, after welcoming the 

 visiting paleontologists, pointed out the value of a discussion of correla- 

 tion problems involving the areas both east and west of the Cordilleras 

 and on both sides of the Pacific Ocean. The subject of the meeting, 

 "General consideration of Paleontologic criteria used in determining 

 time relations,'" was then declared in order and the following papers were 

 presented : 



CRITERIA OF CORRELATION FROM THE POINT OF VIEW OF THE 

 INVERTEBRATE PALEONTOLOGIST 



BY EDWABD O. ULRICH 



