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CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



June 19. The Geography of Europe and the World War. 



Prof. Earle G. Linsley, Department of Science. 



Mills College. 

 July 17. The Influence of the Weather on Human Activities. 



Edward A. Beals, District Forecaster, United States 



Weather Bureau. 

 August 21. The Early Days of the Academy. 



Charles B. Turrill. 

 September 18. The Ways in which Insects are Modified or Adapted to 

 their Environment and Mode of Life. 



Dr. Edwin C. Van Dyke, Professor of Entomology, 



University of California. 

 October 16. Some Philosophical Considerations of Mathematics. 



Dr. Rufus L. Green, Professor of Mathematics, 



Stanford University. 

 December 18. Birds of the High Sierras and their Environment. 



Dr. William F. Bade, President, California Associated 



Societies for the Conservation of Wild Life. 



The Sunday afternoon lectures delivered in the Museum 

 building during the year 1918 included the following: 



January 6. Midwinter Birds of Golden Gate Park. 



Dr. Joseph Grinnell, Director of the Museum of Verte- 

 brate Zoology, University of California. 



January 13. Fish and Game in California. 



Dr. H. C Bryant, Expert, Fish and Game Commission. 



January 20. Forest Insects. 



Prof. R. W. Doane, Department of Entomology, 

 Stanford University. 



January 27. Experiences in a Georgia Swamp. 



Prof. J. C. Bradley, Department of Entomology, 

 Cornell University. 



February 3. Bird Life as seen through the Camera, 



Dr. J. Rollin Slonaker, Department of Physiology, 

 Stanford University. 



February 10. California Petroleum. 



Dr. Roy E. Dickerson, Curator of Invertebrate Paleon- 

 tology, California Academy of Sciences. 



February 17. Our Nearest Neighbor, the Moon. 



Prof. E. G. Linsley, Department of Geology and 

 Astronomy, Mills College. 



February 24. The Crab Fisheries of the Pacific Coast. 



Dr. F. W. Weymouth, Department of Physiology, 

 Stanford University. 



March 3. The Pacific Whale Fisheries. 



Dr. Harold Heath, Professor of Zoology, 

 Stanford University. 



