TITLES OF PAPERS 703 



NINETEENTH ANNUAL REPORT OF THE COMMITTEE ON PHOTOGRAPHS 



The Photograph Committee, Mr 1ST. H. Darton, reported that there had 

 been few accessions during the year and practically no use of the collec- 

 tion. 



TITLES OF PAPERS PRESENTED BEFORE SECTION E OF THE AMERICAN 

 ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE 



On account of the length of the programme, the Council formed a 

 special section for the consideration of certain papers forming part of a 

 symposium on correlation which had been arranged for by Bailey Willis, 

 chairman, and F. P. Gulliver, secretary, of Section E (geology and geog- 

 raphy) of the American Association for the Advancement of Science. 

 For the sake of record the whole list of these papers, with the times when 

 they were read, follows. 



Monday, Decembeb 28 



Pre-Cambrian 



11.00 a. m. to 12.10 P. M. 



C. R. Van Hise: "Principles of Pre-Cambrian correlation." 



F. D. Adams : "The basis of Pre-Cambrian correlation." 



Early and Middle Paleozoic 



3.30 to 4.00 p. m. 



C. D. Walcott : "Evolution of early Paleozoic faunas in relation to their en- 

 vironment." 



4.00 to 5.50 p. m. 



A. W. Grabau : "Physical and faunal evolution of North America in the late 

 Ordovicic, Siluric, and Devonic time." 



4.50 to 5.30 P. m. 



Stuart Weller: "Correlation of Middle and Upper Devonian and Mississip- 

 pian faunas of North America. 



Tuesday, Decembeb 29 



Late Paleozoic 

 11.00 A. m. to 12.05 P. M. 



G. H. Girty: "Physical and Faunal changes of Pennsylvanian and Permian 

 in North America." 



David White : "The Upper Paleozoic floras, their succession and range." 



LXV — Bull. Gkol. Soc. Am., Vol. 20, 1908 



