The Period from 1921 to 1940 53 



1936. James Rowland Angell : "The Scholar and the Specialist." The 

 American Scholar 1937, summer. 



1937. George Lyman Kittredge: "Shakespeare and the Critics." To ap- 

 pear in a book. 



1938. Frank Pierrepont Graves: "Is Education a Science." School and 

 Society. 



1939. Marjorie Hope Nicolson : "Science and Literature." 



Annual Maiben Lectures 



The Maiben Lectures were established in 1932 in memory of Hector E. 

 Maiben, for most of his life a farmer near Lincoln, Nebraska, who was for 

 ten years a sustaining member of the Association and who left his entire 

 estate to the Association upon his death. The Maiben lecturers and their 

 subjects have been as follows : 



1932. Henry Norris Russell : "The Constitution of the Stars." Science 



77- 65-79- 



1933. William Morris Davis : "The Faith of Reverent Science." The 



Scientific Monthly 38 : 36. 1933. 



1934. L. Dudley Stamp : "Planning the Land of the Future." Science 80: 

 507-512. 



1935. Richard P. Strong: "The Importance of Ecology in Tropical Dis- 

 eases." Science 82 : 307-317. 



1936. Charles Camsell : "A 4000 Mile Flight over Northwestern Canada 

 in August, 1935." (No record of publication.) 



1937. Nevil V. Sidgwick: "Molecules." Science 86: 335-340. 



1938. Robert C. Wallace : "The Changing Values of Science." Science 

 88: 265-271. 



1939. Victor G. Heiser : "The Influence of Nutrition on the Diseases of 

 Middle and Old Age." The Scientific Monthly 49 : 304-310. 



1940. Edwin P. Hubble: "Problems in Nebular Research." 



The John Wesley Powell Lectures 



In 1929 the Southwestern Division inaugurated the John Wesley Powell 

 Memorial Lectures in honor of a distinguished geologist and the leader of 

 the first expedition that descended the Colorado River through the Grand 

 Canyon. The lecturers and the titles of their addresses have been as follows : 



1929. William Morris Davis, Harvard University. 



1930. Rodney H. True, University of Pennsylvania. 



1932. Max Pinner, Desert Sanatorium of Southern Arizona : "Fifty 

 Years of the Tubercle Bacillus." 



1933. Aldo Leopold, University of Wisconsin : "The Conservation Ethic." 



