LITERATURE CITATIONS 305 



1913. Quantitative studies of inheritance in Nicotiana hybrids. 

 II. Univ. Calif. Pub. on 'Botany, 6: 169-188. 



1915. Parthenocarpy and parthenogenesis in Nicotiana. Proc. Nat. 



Acad. ScL, 1:341-346. 

 GOODSPEED, T. H. and CLAUSEN, R. E., 1917. Mendelian factor differences 



versus reaction system contrasts in heredity. Am. Nat., 51 : 31-46, 



92-101. 

 GRAHAM, R. J. D., 1916. Pollination and cross-fertilization in theJuar 



plant (Andropogon Sorghum, Brot.). Mem. Dept. Agr. India Bot. 



Ser., 8:201-216. 

 GROTH, B. H. A., 1910. Structure of tomato skins. New Jersey Agr. Exp. 



Sta., Bull. 228, 20 pp. 



1911. The Fi heredity of size, shape, and number in tomato leaves. 

 Parts 1 and 2. New Jersey Agr. Exp. Sta., Bull. 238 and 239. 



1912. The Fi heredity of size, shape, and number in tomato fruits. 

 New Jersey Agr. Exp. Sta., Bull. 242. 



1914. The "Golden Mean" in the inheritance of size. In Science, 

 N. S., 39:581-584. 



1915. Some results in size inheritance. New Jersey Agr. Exp. Sta., 

 Bull. 278. 



GUIGNARD, M. L., 1899. Sur les antherozoides et la double copulation 



sexuelle chez les vegetaux angiospermes. Rev. gener. , d. Bot., 11 : 



129-135. 



1901. La double fecondation dans le mais. Jour, de Bot., 15 : 37-50. 

 HAGEDOORN, A. L., and A. C., 1914. Studies on variation and selection. 



Zeitschr. fur Induk. Abst. u. Vererb., 11: 145-183. 

 HANSEN, N. E., 1911. Some new fruits. South Dakota Agr. Exp. Sta., 



Bull. 130: 163-200. 



1915. Progress in plant breeding. South Dakota Agr. Exp. Sta., 



Bull. 159: 179-192. 

 HARLAN, H. V., 1918. The identification of varieties of barley. U. S. 



Dept. Agr., Bur. Plant Indust., Bull. 622, 32 pp. 



1920 Smooth Awned barleys, Jour. Amer. Soc. Agron. 12: 205-208. 

 HARLAN, H. V., and ANTHONY, S. B., 1920. Development of barley kernels 



in normal and clipped spikes and the limitations of awnless and hooded 



varieties. Jour. Agric. Res., 19 : 431-472. 



HARLAN, H. V. and HAYES, H. K, 1920. The occurrence of the fixed in- 

 termedium Hordeum intermedium haxtoni in crosses between H. vul- 



gare pallidum and H. distichon. Jour. Agr. Res., 19: 575-591. 

 HARLAND, S. C., 1917. On the inheritance of the number of teeth in the 



bracts of Gossypium. West Indian Bull., 16 : 111-120. 



1919a. Notes on inheritance in the cowpea. Agr. News. Barbados, 



18 : 20. 



19196. Notes on inheritance in the cowpea. Agr. News. Barbadose 



18 : 68. 



1919c. Inheritance of certain characters in the cowpea (Vigna sinne- 



sis). Jour. Genetics, 8: 101-132. 



1920. Inheritance of certain characters in the cowpea. (Vigna sinnsis.), 



II. Jour. Genetics-, 10: 193-205. 

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