212 INDEX TO AMERICAN BOTANICAL LITERATURE 
Jenkins, E. W. Cotton and some of its diseases and insects. Univ. 
Florida Agr. Extens. Bull. 15: 1-19. f. 1-7. F 1919. 
[Corrected reprint. 
Jennings, O. E. Fossil plants from the beds of volcanic ash near 
Missoula, western Montana. Mem. Carnegie. Mus. 8: 385-450. 
pl. 22-33 + fi-7. S 1920. 
Includes new species in Equisetum (1), Sequoia (1), Juglans (1), Betula (1), 
Alnus (2), Quercus (1), Ficus (1), Ilex (1), Celastrus (1), Aralia (1), and Vaccinium (1). 
Johnson, J. Fusarium-wilt of tobacco. Jour. Agr. Research 20: 
515-530. pl. 63-67. 3 Ja 1921. 
Jones, F. R., & Drechsler, C. Crownwart of alfalfa caused by Uro- 
phlyctis Alfalfae. Jour. Agr. Research 20: 295-323. pl. 47-56. 
15 N 1920. 
Jones, L. H., & Shive, J. W. The influence of iron in the forms of 
ferric phosphate and ferrous sulfate upon the growth of wheat in a 
nutrient solution. Soil Sci. 11: 93-98. pl. z. F 1921. 
Jones, L. R., Walker, J. C., & Tisdale, W. B. Fusarium resistant 
cabbage. Agr. Exp. Sta. Univ. Wisconsin Research Bull. 48: 
I-34. J. 1-70. ° Nixo36, 
Judd, C. S. Algaroba seed germination tests. Hawaiian For. & 
ic. 17: 342-344. D 1920. : 
Prosopis juliflora. : 
Jurica, H. S. Development of head and flower of Dipsacus sylvestris. 
Bot. Gaz. 71: 138-145. f. I-1g. 15 F 1921. 
Kaiser, G. B. Little journeys into mossland—I. Early bryological 
experiences. Bryologist 23: 88-90. 8 F 1921 
Keitt, T. E., & Murray,A.W. The influence of certain factors on the 
time of opening of cotton. Georgia Exp. Sta. Bull. 130: 21-34. 
f. I-3. 1920. 
Kelley, W. P., & Cummins, A. B. Composition of normal and mottled 
Citrus leaves. Jour. Agr. Research 20: 161-198. tN 1920. 
Kimball, W. Reminiscences of Alvan Wentworth Chapman. Jour. 
New York Bot. Gard. 22: 1-11. Ja 1921 
Knowlton, C. H., & Deane, W. Reports on the flora of the Boston 
district, X X XIII. Rhodora 22: 123-127. 3 Au 1920. 
Koser, S. A. A bacteriological study of canned ripe olives. Jour. 
Agr. Research 20: 375370. 1.0 1980. 
Kraemer, H. Michigan—an important source of raw _ vegetable 
products. Ann. Rep. Michigan Acad. Sci. 21: 167-199. jl 1920. 
Wit h especial account of medicinal properties of native plants. 
