oon INDEX TO AMERICAN BOTANICAL LITERATURE 
Howe, M. A. Dahlias and their culture. Jour. Hort. Soc. New York 
11: 285-301. pl. 45+. 1-3. 
Reprinted abridged and with substitute illustrations in Gard. Chron. Am. 23: 
152-154. My 1gI9. 
Johnson, A. T. Arbutus Menziesii. The Garden 83: 124. 15 Mr 
1919. 
Johnson, J., & Milton, R.H. Strains of white burley tobacco, resistant 
to root-rot. U.S. Dept. Agr. Bull. 765: 1-11. f. 7-4. 18 Ap 1919. 
Jones, L. R. Our journal, Phytopathology. Phytopathology 9: 159- 
164. 2 Ap 1919. 
Lee, H. A. Plant pathology in Japan. Phytopathology 9: 178, 179. 
2 Ap 1919. 
Leighty, C. E., & Hutcheson,T. B. On the blooming and fertilization 
of wheat flowers. Jour. Am. Soc. Agron. 11: 143-162. f. II, 12. 
Ap 1919. 
Lloyd, F.E. The origin and nature of the mucilage in the cacti and in 
certain other plants. Am. Jour. Bot. 6: 156-166. 1 My 1919. 
Love, H. H., & Craig, W. T. The synthetic production of wild wheat 
forms. Jour. Heredity 10: 51-64. f. 1-9+frontispiece. 5 Ap 1919. 
Lowe, R. L. Collecting in Arkansas. Bryologist 22: 14,15. 30 Ap 
1919. 
Lyman, G. R. The unification of American botany. Science II. 49: 
339-345. 11 Ap 19109. 
Lyon, T. L. Influence of higher plants on bacterial activities in soils. 
Jour. Am. Soc. Agron. 10: 313-322. D 1918. 
MacMillan, H. G. Fusarium-blight of potatoes under irrigation. 
Jour. Agr. Research 16: 279-303. pl. 37-41. 17 Mr 1919. 
Macoun, J. M. Habitat of Carex Franklinii Boott. Ottawa Nat. 32: 
169. Mr 1919. 
Martin, J. N. Botany for agricultural students. i-x-+1-585. f. 1-488. 
New York. 1919. 
McClelland, T. B. Vanilla: a promising new crop for Porto Rico. 
Porto Rico Agr. Exp. Sta. Bull. 26: 1-32. pl. 1-3+f. 1-4. 17 AP 
1919. 
Moore, G. T. Botanical participation in war work. Science II. 49: 
269-274. 21 Mr 1919. 
Murrill, W. A. The natural history of Staunton, Virginia. i-xiii+I- 
266. pl. 1-4. New York. 
_ Nichols, G. E. Lophiola aurea in Nova Scotia. Rhodora 21: 68. 
14 Ap 1919. 
