498 INDEX TO AMERICAN BOTANICAL LITERATURE 
Jennett, H. N. Ivy poisoning: treatment and cure. Nat. Mag. 
4: 119. . “Au” JT 1924. 
Johnson, M. O. Manganese chlorosis of pineapples: its cause 
and control. Hawaii Agr. Exp. Sta. Bull. 52: 1-38. ff. 1-5 
+ pl. 1-4. Jl 1924. 
Jones, W. B. La ceiba, the silk cotton tree of Mexico. Am. 
Forests and Forest Life 30: 463-464. ‘“‘Au”’ Jl 1924. 
(Illust.) 
Kern, F.D.,& Whetzel, H.H. Observaciones en las enfermedades 
del cafeto y de los arboles de sombra. Revista Agr. Puerto 
Rico 13: 7-11. Jl 1924. (Illust.) 
Koch, F. J. An Orchis in the Michigan wilds. American Forests 
and Forest Life 30: 499-500. “Au” Jl 1924. (Illust.) 
Koehler, B., Dickson, J. G., & Holbert, J. R. Wheat scab and 
corn rootrot caused by Gibberella Saubinetii in relation to 
crop successions. Jour. Agr. Res. 27: 861-880. f. 1-3 + 
pl. 1, 2. 15 Mr 1924. 
Latshaw, W. L., & Miller, E. C. Elemental composition of the 
corn plant. Jour. Agr. Res. 27: 845-860. f. 1 + pl. 1. 
15 Mr 1924. 
Leighty, C. E., & Sando, J. W. Pistillody in wheat flowers. 
Jour. Hered. 15: 263-268. f. 15, 16. “Je” 21 Au 1924. 
Lesley, J. W. Cross pollination of tomatoes. Varietal differ- 
ences in amount of natural cross-pollination important 
factor inselection. Jour. Hered. 15: 233-235. f.20.‘'My” 
30 Jl 1924. 
Lloyd, F. E. The vegetation of Canada. Handb. of Canada. 
207-228. f. 19-21. Univ. of Toronto press. 1924. 
Lowe, R.L. Saxifraga Aizoon on Mt. Ktaadn. Rhodora 26: 
168. 4 Au 1924. 
MacDougal, D. T. The arrangement and action of material in 
the plasmatic layers and cell-walls of plants. Proc. Am. 
Philos. Soc. 63: 76-93. f. I, 2. 1924. 
MacReynolds, G. Two remarkable tree growths. Am. Forests 
and Forest Life 30: 497-498. ‘‘Au”’ Jl 1924. (Illust.) 
