LITERATURE CITATIONS 317 



WALDRON, L. R., 1912. Hardiness in successive alfalfa generations. Am. 



Nat., 46 : 463-469. 



1919. Cross-fertilization in alfalfa. Jour. Am. Soc. Agron., 11: 



259-266. 



WALLER, A. E., 1917. A method for determining the percentage of self- 

 pollination in maize. Jour. Am. Soc. Agron., 9: 35-37. 

 WALTER, H. E., 1916. Genetics. The Macmillan Co., New York, 



272 pp. 

 WARBURTON, C. W. 1914. Notes on oats for the Southern United States. 



Jour. Am. Soc. Agron., 6: 118-121. 

 WAUGH, F. A., 1896. The pollination of plums. Vermont Agr. Exp. Sta., 



Bull. 63 : 47-65. 



1897. Problems in plum-pollination. Vermont Agr. Exp. Sta. 

 Ann. Kept., 10: 87-98. 



1898. Problems in plum-pollination. Vermont Agr. Exp. Sta. Ann. 

 Kept., 11 : 238-262. 



1899. The pollination of plums. Vermont Agr. Exp. Sta. Ann. 

 Kept., 12:189-209. 



1900. Further work in plum-pollination. Vermont Agr. Exp. 

 Sta. Ann. Kept., 13: 355-362. 



1901. Plums and plum culture. Orange Judd Co., New York, 

 371 pp. 



WEBBER, H. J., 1900. Xenia, or the immediate effect of pollen, in maize. 



U. S. Dept. Agr., Div. Veg. Phys. & Path., Bull. 22, 38 pp. 



1905. Cotton breeding. In Am. Breeders' Assoc. Kept., 1: 37-44. 



1911. Preliminary notes on pepper hybrids. Amer. Breeders' Assoc. 



Kept., 8: 188-199. 

 WEBBER, H. J., HUNT, T. F., GILMORE, J. W., CLARK, C. F., and FRASER, 



S., 1912. The production of new and improved varieties of timothy. 



New York Cornell Agr. Exp. Sta., Bull. 313: 339-392. 

 WEBBER, H. J. and ORTON, W. A., 1902. A cowpea resistant to root-knot. 



Part II. U. S. Dept. Agr., Bur. Plant Indust., Bull. 17, 23-36. 

 WELLINGTON, R., 1912. Influence of crossing in increasing the yield of the 



tomato. N. Y. Agr. Exp. Sta., Bull. 346: 57-76. 



1913a. Studies of natural and artificial parthenogenesis in the genus 



Nicotiana. In Am. Nat., 47, 279-306. 



19136. Raspberry breeding. Soc. Hort. Sci. Rept. for 1913: 155-159. 

 WESTGATE, J. M., 1910. Variegated alfalfa. U.S. Dept. Agr., Bur. Plant 



Indust., Bull. 169: 1-63. 



1915. Red-clover seed production: pollination studies. U. S. Dept. 

 of Agr., Bull. 289, 31 pp. 



WHITE, O. E., 1910. Inheritance studies in Pisum. I. Inheritance of 

 cotyledon color. Am. Nat., 60 : 530-547. 



1916. The origin and history of our more common cultivated fruits. 

 Brooklyn Bot. Gard. Leaflets, Series 4: pp. 1-12. 



1917. Inheritance of endosperm color in maize. Am. Jour. Botany, 

 4:396-406. 



1917. Inheritance studies in Pisum. IV. Interrelation of the genetic 

 factors of Pisum. Jour. Agr. Res., 11: 167-190. 



