54 Iiiherita^ice mid Evolution in Ortlioptera lit 



progress of the experiments and arrangement of the data. The expenses 

 have been carried by the Adams fund and State fund of the Kansas 

 Experiment Station, and I have had the most open-minded and complete 

 encouragement from Director W. M. Jardine. 



LITERATURE CITED. 



Bridges, C. B. 1916. " Non-disjunction as a proof of the Chromosonae Theory 

 of Heredity." Genetics, Vol. i. pp. 1—52 ; 107—163. 



Castle, W. E. 1914. " Nabours' Grasshoppers, Multiple Allelomorphism, Linkage, 

 and Misleading Terminologies in Genetics." Ainer. Nat. Vol. xlviii. pp. 383, 

 384; 503, 504. 



Dexter, John S. 1914. " Nabours' Breeding Experiments with Grasshoppers." 

 Artier. Nat. Vol. xlviii. pp. 317—320. 



Morgan, T. H. 1914. "The Theoretical Distinction between Multiple Allelo- 

 morphs and Close Linkage." Amer. Nat. Vol. xlviii. pp. 502, 503. 



Nabours, R. K. 1914. " Studies of Inheritance and Evolution in Orthoptera. 1." 

 Journal of Genetics, Vol. in. pp. 141 — 170. 



1917. " Studies of Inheritance and Evolution in Orthoptera. 11." Journal 



of Genetics, Vol. vii. pp. 1 — 46. 



