638 PRACTICAL PROBLEMS 



INFLUENCE OF NUTRITION ON SEX. Experiment Station Record, XVI, 



228. 

 PARTHENOGENETIC FERTILIZATION IN THE HONEYBEE. Experiment 



Station Record, XV, 792. 

 RECENT THEORIES IN REGARD TO DETERMINATION OF SEX. By T. 



H. Morgan. Popular Science Monthly, LXIV, 97-1 16. 

 SEX CONTROL. By Professor Schenck of Austria. Science, VII, 736- 



738. 

 SEX DETERMINATION IN BEES. (A discussion of the Dzierzon-Dickel 



controversy.) By B. Sporrer. Experiment Station Record, XI, 5$i, 



657, 956. 

 SEX DETERMINATION, WHETHER BUD SHALL BE LEAF OR FLOWER. 



By E. S. Goff. American Garden, 1901, pp. 330-333, 346-347. 

 SEX IN MICE. By Parsons and Copeman. Proceedings of the Royal 



Society, London, LXXIII, 32-48. 

 SEX IN PLANTS A MATTER OF NUTRITION. By T. Mehan. Report, 



Department of Agriculture, 1898, pp. 536-548; Experiment Station 



Record, XI, 910. 

 WISCONSIN EXPERIMENT STATION REPORT, 1900, pp. 266-285 ; 1901, 



pp. 304-316. 

 ZIEGLER'S THEORY OF SEX DETERMINATION. By T. H. Morgan. 



Science, XXII, 839-841. 



