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INDEX TO AMERICAN BOTANICAL LITERATURE 115 
Gates, R. R. Heredity and mutation as cell phenomena. Am. Jour. 
Bot. 2: 519-528. D 1915. 
Grover, F.O. Extensions of range. Rhodora 17: 227, 228. N 1915. 
Hasselbring, H., & Hawkins, L. A. Carbohydrate transformations in 
sweet potatoes. Jour. Agr. Research §: 543-560. 27 D 1915. 
Hasselbring, H., & Hawkins, L. A. Respiration experiments with 
sweet potatoes. Jour. Agr. Research 5: 509-517. 20 D 1915. 
Heald, F. D., & Studhalter, R. A. Seasonal duration of ascospore ex- 
pulsion of Endothia parasitica. Am. Jour. Bot. 2: 429-448. f. 1-6. 
16 D 1915. 
Heald, F. D., & Woolman, H. M. Bunt or stinking smut of wheat. 
- Washington Agr. Exp. Sta. Bull. 126: 1-24. f. 1-5. N 1915. 
Hoffmann, C. A contribution to the subject of the factors concerned 
in soil productivity. Kansas Univ. Sci. Bull. 9: 81-99. pl. 23-27. 
D 1915. 
Hotson, J. W. Enemies of the Rhododendron. The Mountaineer 8: 
75-77. D 1915. _ [Illust.] 
House, H. D. Report of the state botanist 1914. N. Y. State Mus. 
Bull. 179: 1-107. 15 D 1915. [Illust.] oe 
Includes articles by L. H. Pennington and C. H. Kauffman here indexed sepa- 
rately. 
Hutchinson, A. H. Fertilization in Abies balsamea. Bot. Gaz. 60: 
457-472. pl. 16-20+f. 1. 16 D 1915. 
Jehle, R. A. El Tizén tardio y la pudricién de la papa. Cuba Estac. 
Exp. Agron. Circ. 48: 1-6. f. 1-6. 1915. 
Kauffman, C. H. The fungi of North Elba. N. Y. State Mus. Bull. 
179: 80-104. 15 D 1915. 
Includes Boletus rubritubifer and Cortinarius chrysolitus, spp. Nov. 
Knudson, L. Toxicity of galactose for certain of the higher plants. 
Ann. Missouri Bot. Gard. 2: 659-666. pl. 22. N 1915. 
Kraus, E. J. Somatic segregation. Jour. Heredity 7: 3-8. f. 1 +fron- 
tispiece. 29 D 1915. 
Long, W. H. A honeycomb heart-rot of oaks caused by Stereum 
subpileatum. Jour. Agr. Research §: 421-428. pl. 41. 6 D 1915. 
Lyman} G. R., & Rogers, J. T. The native habitat of Spongospora 
subterranea. Science II. 42: 940, 941. 31 D 1915. 
