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1909. HECKEL, M., Fixation de la mutation gemmaire culturale 

 du Solanum maglia. Soc. Nation. d'Agr. Bull. 69 : 874^877. 



1909. HOLDEFLEISS, P., Bastardierungsversuche mil Mais. 

 Landwirtsch. Inst. Halle a. S. Ber. 19 : 178^198, 1 pi. 



1909. HOLMES, S. J., The Categories of Variation. Am. Nat. 

 43 : 257-285. 



1909. HOWARD, A., and HOWARD, G. L. C., The Varietal Char- 

 acters of Indian Wheats. India Dept. Agr. Mem. Bot., 

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1909. HY, F., Sur une forme sterile de Cardamine hirsuta. 

 Soc. Bot. France Bull. 56 : 210-213. 



1909. JENNINGS, S. H., Heredity and Variation in the Simplest 

 Organism. Am. Nat. 43 : 321-337. Bibliog. in notes. 



1909. JEPSON, WILLIS L., Spontaneous Hybrids of Native Cali- 

 fornian Trees. A. B. A. Rep. 5 : 25^-262. 



1909. JOHANNSEN, W., Uber Knospenmutation bei Phaseolus. 

 Zeitsch. f. indukt. Abst.- u. Vererb. 1 : 1-10, 2 figs. Bib- 

 liog. | p. 



1909. JOHNSON, R. H., Variation in Syndesmon and Hepatica. 

 Ohio Nat. 9:431-436. 



1909. JORDON, D. S., and KELLOGG, V. L., The Scientific As- 

 pects of Luther Burbank's Work, xiv + 115 pp. San 

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1909. KNUTH, R., Uber Bastardbildung in der Gattung Pelargo- 

 nium. Bot. Jahrb. f. Systematik usw. (Engler) 44 : 1-35. 

 4 figs. 



1909. LEAKE, H. M., Studies in the Experimental Breeding of 

 Indian Cottons 2. On Buds and Branching. Asiat. Soc. 

 Bengal Jour., n.s. 5 : 23-30. 



1909. LEAVITT, R. G., A Vegetative Mutant and the Principle 

 of Homoeosis in Plants. Bot. Gaz. 47 : 30-68, figs. 1-19. 



1909. LEE, F. E., Report of Wheat Improvement Committee. 

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1909. LOCK, R. H., A Preliminary Survey of Species Crossing 



