references: evolution 459 



Skinner, J. J. The antizymotic action of a harmful soil constituent: salicylic alde- 

 hyde and mannite. Plant World, 18: 162-167. June, 1915. 



Skinner, J. J. Effect of vanillin as a soil constituent. Plant World, 18: 321-330, 

 figs. 1-5. December, 1915. 



True, R. H., and Bartlett, H. H. The exchange of ions between the roots of 

 Lupinus albus and culture solutions containing one nutrient salt. Amer. 

 Journ. Bot., 2: 255-278, figs. 1-13. June, 1915. 



True, R. H., and Bartlett, H. H. The exchange of ions between the roots of 

 Lupinus albus and culture solutions containing two nutrient salts. Amer. 

 Journ. Bot., 2: 311-323, figs. 1-3. July, 1915. 



EVOLUTION 



Bartlett, H. H. Additional evidence of mutation in Oenothera. Bot. Gaz., 



59: 81-123, figs. 1-17. February 16, 1915. 

 Bartlett, H. H. The experimental study of genetic relationships. Amer. Journ. 



Bot., 2: 132-155. April 23, 1915. 

 Bartlett, H. H. Mass mutation in Oenothera pratincola. Bot. Gaz., 60: 



425-456, figs. 1-15. December 16, 1915. 

 Bartlett, H. H. Mutation en masse. Amer. Nat., 49: 129-139, figs. 1-9 March, 



1915. 

 Bartlett, H. H. The mutations of Oenothera stenomeres. Amer. Journ. 



Bot., 2: 100-109, figs. 1-4. February, 1915. 

 Belling, J. The chromosome hypothesis of heredity. Journ. Heredity, 6: 67. 



January 25, 1915. 

 Belling, J. Prepotence in plant breeding. Journ. Heredity, 6: 45. January, 



1915 

 Cockerell, T. D. A. The marking factor in sunflowers. Journ. Heredity, 



6: 542-545, figs. 5, 6. November 26, 1915. 

 Cook, O. F. Two classes of hybrids. Journ. Heredity, 6: 55-56. January 25, 1915. 

 Dorsey, M. J. Pollen sterility in grapes. Journ. Heredity, 6: 243-249, figs. 



1-6. May 25, 1915. 

 Earle, F. S., and Popenoe, W. Plant breeding in Cuba. Journ. Heredity, 



6: 558-568, figs. 10-15. November 26, 1915. 

 Francis, M. S. Double seeding petunias. Journ. Heredity, 6: 456-461, figs. 



6-8. September 27, 1915. 

 Gardner, V. R. Sweet cherry breeding. Journ. Heredity, 6: 312-313. June 



25, 1915. 

 Gates, R. R. On the nature of mutations. Journ. Heredity, 6: 99-108, figs. 1-7. 



February 25, 1915. 

 Hayes, H. K. Tobacco mutations. Journ. Heredity, 6: 73-78, figs. 12, 13 and 



frontispiece. January 25, 1915. 

 Jones, D. F. Illustration of inbreeding. Journ. Heredity, 6: 477-479, figs. 



10, 11. September 27, 1915. 

 Kraus, E. J. The self -sterility problem. Journ. Heredity, 6: 549-557, figs. 7-9. 



November 26, 1915. 

 Kraus, E. J. Somatic segregation. Journ. Heredity, 7: 3-8, fig. 1 and frontis- 

 piece. December 29, 1915. 



