INDEX TO AMERICAN BOTANICAL LITERATURE 25 
Fromme, F. D., & Wingard, S. A. Varietal susceptibility of beans to 
rust. Jour. Agr. Research 21: 385-404. pl. 69-73. 15 Je 1921. 
Glover, W.O. Blister canker of apple and its control. New York Agr. 
Exp. Sta. Bull. 485: 1-71. pl. 1-15 + f. 1-8. Ja 1921. 
Hansen, A. A. Protect our vanishing wild plants! Conservationist 4: 
67-70. My 1921. [Illust.] 
Harms, H. Uber die Fluorescenz des Aufgusses der Rinde von Prunus 
serotina. Verh. Bot. Ver. Brandenburg 59: 146-150. 15 Ja 1918. 
Harms, H. Uber Fluorescenz-Erscheinungen bei dem Holze der 
Leguminose Eysenhardtia amorphoides H. B. K. Verh. Bot. Ver. 
Brandenburg 56: 184-197.° 18 Ja 1915. 
Harms, H. Nachtrage und Verbesserungen zu meinem Aufsatze tiber 
Fluorescenzerscheinungen. Verh. Bot. Ver. Brandenburg 57: 191- 
202. 1 Mr-1976, 
Harms, H. Ernst Ule. Verh. Bot. Ver. Brandenburg 57: 150-184. 
1 Mr 1916. [With portrait.] 
Harris, J. A. Tissue weight and water content in a tetracotyledonous 
mutant of Phaseolus vulgaris. Proc. Soc. Exper. Biol. and Med. 18: 
207-209. 1921. 
Harvey, E. M., & Murneek, A. E. The relation of carbohydrates and 
nitrogen to the behavior of apple spurs. Oregon Agr. Coll. Exp. 
Sta. Bull. 176: 1-47. f. I-12. Ap 1921. 
Hayes, H. K., & Gardner, R. J. Breeding crop ; planta: Pp. i-xvii 
+ 1-328. f. I-66. New York. 1921. 
Hume, A. M., Loomis, H., & Hutton, J.G. Water as a limiting factor 
in the growth of sweet clover (M[elilotus] alba). South Dakota 
Agr. Exp. Sta. Bull. 191: 257-298. pi. r, 2. Jl 1920. 
Hutchinson, C. B. Heritable characters of maize—VII. Shrunken 
endosperm. Jour. Hered. 12: 76-83. f. 20-24. 11 JI 1921. 
Hutchinson, J. The genera of Fumariaceae and their distribution. 
Kew Bull. Misc. Inform. 1921: 97-115. 1921. 
Illick, J. S. The white pine. Am. For. 27: 422-426. Jl 1921. 
[Ilust.] 
Jones, L. R., Walker, J. C., & Tisdale, W. B. Fusarium resistant 
cabbage. Univ. Wisconsin Agr. Exp. Sta. Research Bull. 48: 1-34. 
f. 1-10. N 1920. 
Judd, C. S. The Alahee tree. Hawaiian For. & Agric. 18: 133-137- 
Je 1921. [Illust.] 
