5. EVENING LECTURES, 1912 



PROF. W. E. CASTLE " Unit Characters in Heredity ' 



Friday, July 5. 



PROF. CHARLES S. MINOT. ." Senescence " Tuesday, July 9. 



PROF. FRANK M. CHAPMAN." A Natural History Reconnais- 

 sance in Mexico " . . . . Friday, July 12. 



DR. GEORGE H. SHULL " The Bearing of Cross and Self- 

 Fertilization on Heredity and 

 Evolution " Tuesday, July 16. 



PROF. H. E. CRAMPTON "A Biological Reconnaissance 



in South America,".. .Friday, July 19. 



DR. R. S. LILLIE " The Role of Membranes in 



Cell-Processes "... .Tuesday, July 23. 



DR. C. M. CHILD " Certain Dynamic Factors in 



Reproduction and their Signifi- 

 cance " Friday, July 26. 



PROF. E. G. CONKLIN " The Mechanism of Cell-Divi- 

 sion " Tuesday, July 30. 



PROF. W. L. TOWER " Experimental Transmutation 



of Specific and Generic Char- 

 acters " Friday, Aug. 2. 



PROF. E. O. JORDAN " The Spread of Typhoid "... 



Tuesday, Aug. 6. 



PROF. CHARLES E. BEssEY."The Phyletic Arrangement of 



Flowering Plants "... Friday, Aug. 9. 



453 



