LITERATURE CITATIONS 307 



HAYES, H. K. and JONES, D. F., 1916. First generation crosses in cu- 

 cumbers. Conn. Agr. Exp. Sta. Ann. Kept, for 1916: 319-322. 

 HAYES, H. K. and OLSON, P. J., 1919. First generation crosses between 



standard Minnesota corn varieties. Minnesota Agr. Exp. Sta., Bull. 



183: 4-22. 

 HAYES, H. K. PARKER, J. H., and KURTZWEIL, CARL, 1920. Genetics of 



rust resistance in crosses of varieties of Triticum vulgare with varieties 



of T. durum and T. dicoccum. Jour. Agr. Res., 11 : 523-542. 

 HAYES, H. K. and STAKMAN, E. C., 1919. Rust resistance in timothy. 



Jour. Am. Soc. Agron., 11 : 67-70. 

 HAYS, W. M., and Boss, ANDREW, 1899. Wheat. Varieties, breeding, 



cultivation. Minnesota Agr. Exp. Sta., Bull. 62: 321-494. 

 HAYS, W. M., 1901. Plant breeding. U. S. Dept. Agr., Div. Veg. Phys. 



and Path. Bull. 29, 72 pp. 

 HECKEL, E., 1909. Fixation de la mutation germinaire culturale du Sola- 



num maglia: variation de forme et de coloris des tubercules unites. 



Compt. Rend. 1' Acad. Sci., 149 : 831-833. 



1912. Sur l,a mutation germinaire culturale du Solanum tuberosum L. 



Compt. Rend. 1' Acad. Sci., 155 : 469-471. 

 HECTOR, G. P., 1913. Notes on pollination and cross-fertilization in the 



common rice plant, Oryza sativa, Linn. Mem. Dept. Agr. India, 



Bot. Ser., 6: 1-10. 



1916. Observation on the inheritance of anthocyan pigment in paddy 



varieties. Mem. Dept. Agr. India, Bot. Ser., 8: 89-101. 

 HEDRICK, U. P., and BOOTH, N. O., 1907. Mendelian characters in toma- 

 toes. Proc. Soc. for Hort. Sci., 5: 19-24. 



HEDRICK, U. P. and ANTHONY, R. D., 1915. Inheritance of certain 'charac- 

 ters of grapes. N. Y. (Geneva) Agr. Exp. Sta., Tech. Bull. 45: 3- 9. 

 HEDRICK, U. P. and WELLINGTON, R., 1912. An experiment in breeding 



apples. N. Y. (Geneva) Agr. Exp. Sta., Bull. 350: 141-186. 

 HENKEMEYER, A., 1915. Untersuchungen iiber die Spaltungen von Weizen- 



bastarden in der F 2 und F 3 Generation. Jour, f iir Land., 63 : 97-124. 

 HILSON, G. R., 1916. A note on the inheritance of certain stem characters 



in sorghum. Agr. Jour, of India, 11 : 150-155. 

 HOPKINS, C. G., 1899. Improvement in the chemical composition of the 



corn kernel. Illinois Agr. Exp. Sta., Bull. 55: 205-240. 

 HOSHINO, Y., 1915. On the inheritance of the flowering time in peas and 



rice. Jour. Col. Agr. Tokoku U. (Sapporo), 6 : 229-288. 

 HOUSER, TRUE, 1912. Certain results in Ohio tobacco breeding. Am. 



Breeders' Assoc. Rept., 8 : 468-479. 

 HOWARD, A.; HOWARD, G.; and RAHMAN KAHN, ABDUL, 1910a. The 



economic significance of natural cross-fertilization in India. Mem. 



Dept. Agr. India, Bot. Ser., 3 : 



1919. Studies of the pollination of crops. I. Mem. Dept. Agr. 



India, Bot. Ser., 10: 195-220. 

 HOWARD, A; and HOWARD, G. L. C., 19106. Studies in Indian tobaccos, 



No. 1. The types of Nicotiana rustica L. Yellow-flowered tobacco. 



Mem. Dept. Agr. India, Bot. Ser., 3 : 1-58. 



1910c. Studies in Indian tobaccos, No. 2. The types of Nicotiana 



tabacum L. Mem. Dept. Agr. India, Bot. Ser., 3 : 59-176. 



