INDEX TO AMERICAN BOTANICAL LITERATURE 301 
Ensign, M.R. A staining method for vascular tissue. Phytopathology 
g: 180. 2 Ap 1919. 
Ensign, M. R. Sweet potato mosaic. Phytopathology g: 180, 181. 
2 Ap 1919. 
Fairchild, D. Present condition and opportunity of the American 
Genetic Association. Jour. Heredity 10: 65-67. 5 Ap 1919. 
Farwell,O.A. Bromelica (Thurber): a new genus of grasses. Rhodora 
21: 76-78. 9 My 1919. 
Fernald, M. L. Lithological factors limiting the ranges of Pinus 
Banksiana and Thuja occidentalis. Rhodora 21: 41-67. 14 Ap 
1919. [Illust.] 
Fitzpatrick, H. M. George Francis Atkinson. Science II. 49: 371, 
372. 18 Ap 1919. 
Fromme, F. D. Cedar rust. Virginia Hort. Soc. Ann. Rep. 23: 
I-11. 1918. 
Fromme, F. D., & Wingard, S. A. Bean rust: its control through the 
use of resistant varieties. Virginia Agr. Exp. Sta. Bull. 220: 
1-18. pl. 1-5. N 1918. 
Giddings, N. J. Infection and immunity in apple rust. West Vir- 
ginia Agr. Exp. Sta. Tech. Bull. 170: 1-71. pl. 1-11. D 1918, 
Gould, H. P. Fig growing in the South Atlantic and Gulf states. U.S. 
Dep. Agr. Farm. Bull. 1031: 1-45. f. I-24. Mr 1919. 
Gray, J., & Peirce, G. J. The influence of light upon the action of 
stomata and its relation to transpiration of certain grains. Am. 
Jour. Bot. 6: 131-155. f. 7-18. 1 My 1919. 
(Greenman, J. M.] Early collections in the Garden Herbarium. 
Missouri Bot. Gard. Bull. 7: 29-35. pl. S11. Mr 1919. 
[Greenman, J. M.} Plants in the aroid house. Missouri Bot. Gard. 
Bull. 7: 35-38. pl. 7-5 Mr 1919. 
Harper, R. M. Some vanishing scenic features of the southeastern 
United States. Nat. Hist. 19: 193-204. F 1919. [Illust.]. 
Hayes, H. K., & Stakman, E. C. Rust resistance in timothy. Jour. 
Am. Soc. Agron. 11: 67-70. F 1919. 
Hoagland, D. R. Note on the technique of solution culture experi- 
ments with plants. Science II. 49: 360-362. 11 Ap IgI9. 
Haas, A. R. C. Respiration after death. Bot. Gaz. 67: 347-365- 
f. 1-3. 18 Ap 1919. 
Hottes, A.C. Commercial plant propagation. 1-180. f. I-105. 
York. 1918. 
New 
