The Period from 1X71 to 1880 27 



2. Vice presidential address, Section on Natural History. O. C. Marsh: 

 "Introduction and Succession of Vertebrate Life in America." 



3. Address of chairman of Subsection on Anthropology. Daniel Wilson 

 1 Historical). 



The St. Louis, Mo., Meeting, . lugiist, i8j8. ( / 01. 27) 



1. Vice presidential address. Section 011 Mathematics, Physics and Chem- 

 istry. Robert 11. Thurston: "Science of the Advancement of Science." 



2. Vice presidential address, Section on Natural History. August R. 

 Crote : "Education and the Succession of Experiences." 



3. Address of chairman of Subsection on Chemistry. F. W. Clarke (re- 

 search in chemistry). 



The Saratoga Springs, X . )'., Meeting, August, 18 jq. {Vol. 28) 



1. Vice presidential address, Section on Mathematics. Physics and Chem- 

 istry. S. P. Langley: "Solar Physics." 



2. Nice presidential address. Section on Natural History. John W. 

 Powell: "Mythologic Philosophy." 



3. Address of chairman of Subsection on Chemistry. Ira Remsen (or- 

 ganic chemistry ). 



4. "Experimental Determination of the Velocity of Light." Albert A. 

 Michel son. 



The Boston Meeting, August, 18S0. ( \'ol. 2p) 



1. Vice presidential address. Section on Mathematics, Physics and Chem- 

 istry. Asaph Hall (astronomical observations). 



2. Nice presidential address. Section on Natural History. Alexander 

 Agassiz: "Paleontological and Embryological Development." 



3. Address of chairman of Subsection of Chemistry. John M. Ordway 

 ( historical ). 



4. Address of chairman of Subsection of Anthropology. J. W. Powell: 

 "Wyandotte ( iovernment. A Short Study of Tribal Society." 



Statistical Data 



Epidemic of yellow fever in Southern States was "alarming.' 



