TORREYA 



November, 1917. 

 Vol. 17 No. II 



THE SEMI-CENTENNIAL OF THE CLUB 



The meetings scheduled in connection with the anniversary 

 were all held and proved a successful and fitting memorial of the 

 oldest botanical organization in the City. The program for 

 Thursday, October 18, was as follows: 



Thursday, October 18, 2 P.M. 



Department of Botany, Schermerhorn Hall, Columbia University 

 President Richards presiding 



1. Welcome and reception by the staff of the Department. 



2. History of the Club, by John H. Barnhart. 



3. Reminiscences by older members of the Club. 



4. "Contact and Pressure Reactions in Pediastrum simplex," 



by R. A. Harper. 



* 5. "Origin of the Hawaiian Flora," by D. H. Campbell. 



* 6. "Uredinales of Cuba," by J. C. Arthur and J. R. Johnston. 

 7. "Six Misunderstood Species of ^wam/a," by G. F. Atkinson. 



* 8. " Sisyrinchium Bermtidiana," by O. E. Farwell. 



9. "The Individuality of the Bean-pod as compared with that 

 of the Bean-plant," by Helene M. Boas. 



10. "Two Months in the Southern Catskills," by O. P. Medsger. 



11. "The Ferns of Subtropical Florida," by J. K. Small. 

 *I2. "Fossil Plants from Porto Rico," by Arthur Hollick. 



13. "A Cotton-rust Epidemic in Texas," by E. W. Olive. 



14. "Bermuda Algae," by M. A. Howe. 



15. "Some Factors influencing the Stimulative Action of Zinc 



Sulphate on the Growth of Aspergillus niger,'' by R. A. 

 Steinberg. 



[No. 10, Vol. 17 of ToRREYA, comprising pp. 171-182, was issued 31 October I9i7-1 



183 



