92 PROCEEDINGS OF THE PITTSBURGH MEETING 



Read from manuscript by the author and illustrated with photographs ; 

 20 minutes. Discussed by Gilbert van Ingen, C. Schuchert, John M. 

 Clarke, G. E. Wieland, and the author. 



At 12.30 p. m. the Society adjourned for luncheon at the Schenley 

 Hotel, convening again at 2 p. m., in conjunction with the Geological 

 Society of America, to hear the address of the retiring President of the 

 Paleontological Society, Dr. J. M. Clarke. Doctor Clarke spoke upon : 



1. The paleontologist and the public. 



2. The paleontology of right living. 



TITLES OF PAPERS ON INVERTEBRATE PALEONTOLOGY AND NAMES OF 



DISPUTANTS 



After the presidential address the Society retired to its own lecture 

 hall for the reading of papers dealing with invertebrate paleontology. 



THE NEW BTRATIQRAPMIG UNITS OF THE HUNTON FORMATION, OKLAHOMA 



BY CHESTER A. REEDS 



Presented without manuscript ; illustrated with lantern slides ; 20 min- 

 utes. Discussed by C. Schuchert and David White. 



GENERA OF MISSISSIPPIAN LOOP-BEARING BRACHIOPODA 

 BY STUART WELLER 



Eead from manuscript; illustrated with lantern slides; 15 minutes. 

 Discussed by C. Schuchert and J. M. Clarke. 



ORDOVICIAN AND SILURIAN POLAR FAUNAS 

 BY R. S. BASSLER 



Presented without manuscript ; illustrated with lantern slides ; 20 min- 

 utes. Discussed by Stuart Weller, W. J. Holland, G. R. Wieland, Charles 

 Schuchert, and J. M. Clarke. 



At 5.30 the Society adjourned for the day. 



Wednesday evening the members of the Society took part in the cus- 

 tomary annual dinner with the Fellows of the Geological Society of 

 America. 



Session of Thursday, December 29, 1910 



Thursday morning the Society was called to order at 10 o'clock by 

 President Schuchert, who announced that the morning would be devoted 

 to the conference on the Criteria in Paleozoic Paleogeography. The 



