The Period from 191 i to 1920 45 



Addresses of Retiring Presidents 



1910. David Starr Jordan (zoology) : "The Making of a Darwin." 

 Science 32 : 929-942. 



191 1. Albert A. Michelson (physics): "Recent Progress in Spectro- 

 scopic Methods." Science 34 : 893-902. 



1912. Charles E. Bessey (botany) : "Some of the Next Steps in Botani- 

 cal Science." Science 37: 1-13. 



1913. Edward C. Pickering (astronomy) : "The Study of the Stars." 

 Science 39: 1-9. 



1914. Edmund B. Wilson (zoology) : "Some Aspects of Progress in 

 Modern Zoology." Science 41 : 1-11. 



1915. Charles W. Eliot (education) : "The Fruits, Prospects and Les- 

 sons of Recent Biological Science." Science 42 : 919-930. 



1916. Wallace W. Campbell (astronomy): "The Nebulae." Science 45 : 



513-548. 



1917. Charles R. Van Hise (geology) : "Some Economic Aspects of the 



World War." Science 47 : 1-10. 



19 1 8. Theodore W. Richards (chemistry) : "The Problem of Radio- 

 active Lead." Science 49: 1-1 1. 



1919. John M. Coulter (botany) : "The Evolution of Botanical Re- 

 search." Science 51 : 1-8. 



1920. Simon Flexner (medicine) : "Twenty-five Years of Bacteriology: 

 A Fragment of Medical Research." Science 52 : 615-632. 



Addresses of Retiring Presidents — The Pacific Division 



1919. D. T. MacDougal (botany) : "Growth in Organisms." Science 



49: 599-605. 



1920. John C. Merriam (paleontology) : "The Research Spirit in Every- 

 day Life of the Average Man." Science 52 : 473-478. 



Statistical Data 

 Year Meeting Place Registration Papers Read Membership 



