ABSTRACTS OF PAPERS 129 



SYMPOSIUM ON PKOBLEMS IK PIISTORY OF FAUNAL AND FLORAL RELATION- 

 SHIPS IN THE ANTILLEAN-ISTHMIAN REGION AND THEIR BEARING ON 

 BIOLOGIC RELATIONSHIPS OF NORTH AND SOUTH AMERICA 



RELATIONS BETWEEN THE PALEOZOIC FLORAS OF NORTH AND SOUTH 



AMERICA 



BY DAVID WHITE 



RELATIONS BETWEEN THE MESOZOIC FLORAS OF NORTH AND SOUTH 



AMERICA 



BY F. H. KNOWLTON 



PALEOCEOGRAPHIC SIGNIFICANCE OF THE CENOZOIG FLORAS OF 

 EQUATORIAL AMERICA AND THE ADJACENT REGIONS 



BY EDWARD W. BERRY 



BEARING OF THE DISTRIBUTION OF THE EXISTING FLORA OF CENTRAL 

 AMERICA AND THE ANTILLES ON FORMER LAND CONNECTIONS 



BY WILLIAM TRELEASE 



After the conclusion of the first part of the symposinm, there was suffi- 

 cient time before adjournment for the day for the presentation of the 

 first paper in the list of those dealing with the invertebrate paleontology 

 of Central America and the West Indies. This paper on the Paleozoic 

 history was presented by the author and was illustrated by lantern slides 

 of paleogeographic maps. Both the papers and the maps called forth 

 such criticism and comments from Miss O'Connell and Messrs. Grabau, 

 Matthew, Vaughan, and others that new data were added to this some- 

 what doubtful portion of Central American history. 



PALEOZOIC HISTORY OF CENTRAL AMERICA AND THE WEST INDIES 



BY R. S. BASSLER 



At 5.30 p. m. the Society adjourned, meeting again at 8 p. m. at the 

 University Club, to hear the address of the retiring President. 



PRESIDENTIAL ADDRESS BY J. C. MERRIAM 



AN OUTLINE OF PROGRESS IN PALEONTOLOGIC RESEARCH ON THE PACIFIC 



COAST 



Doctor Merriam's account of the progress of all three branches of 

 paleontology on the west coast was followed with much interest and atten- 

 tion by tlie fifty or more members and visitors who were present. 



