74 INDEX TO AMERICAN BOTANICAL LITERATURE 
Boynton, K. R. Monarda media. Addisonia 5: 39. pl. 180. 30S 
1920. 
Carey, C.L. A method of preparation and some properties of a starch 
gel. Bull. Torrey Club 47: 455-463. 29 O 1920. 
Chase, V. H. Francis Eugene M’Donald. Rhodora 22: 145, 146. 
portrait. 29 O 1920. 
Chidsey, C. E. Knots and boles on forest trees. Sc. Am. a ros a: 
209, 210. N 1920. 
Clinton, G. P. New or unusual plant injuries and diseases, found in 
Connecticut, 1916-1919. Connecticut Agr. Exp. Sta. Bull. 222: 
397-482. pl. 33-55. Au 1920. 
Clute, W. N. How often does a branch bear leaves? Gard. Chron. 
24: 375. N 1920. 
Clute, W. N. Naming flowers. Flower Grower 7: 171. N 1920. 
Coburn, L. H. Marsilea quadrifolia in Maine. Rhodora 22: 156. 
29 O 1920. 
Couch, J. F., & Giltner, L. T. An experimental study of Echinacea 
therapy. Jour. Agr. Research 20: 63-84. 1 O 1920. 
Creswell, M. The American ash. Nature Study Rev. 16: 279-284. 
O 1920. 
Doolittle, S. P. The mosaic disease of cucurbits. U.S. Dept. Agr. 
Bull. 879: 1-69. pl. r-ro. 15 N 1920. 
Earle, F. S. La extirpacién del mosaico de la cafia como medio de 
represién. Puerto Rico Dept. Agric, y Trab. Bol. 22: 1-19. Ja 
1920. 
Earle, F.S. Sugar cane root disease. Jour. Dept. Agr. Porto Rico 4: 
37>:: Ja 1920. 
Espino, R. B. Some aspects of the salt requirements of young rice 
plants. Philipp. Jour. Sci. 16: 455-523. pl. z. My 1920. ‘ 
Fernald, M. L. Gawltheria procumbens, L., forma suborbiculata, n. f. 
Rhodora 22: 155, 156. 29 O 1920. 
Fernald, M. L. Lactuca hirsuta, Muhl., forma calvifolia, n. f. Rho- 
dora 22: 156. 29 O 1920. 
Gersdorff, C. E. F. The history of the rose in America. Flower 
Grower 7: 169, 170. N 1920. 
Gile, P. L., & Carrero, J. O. Cause of lime-induced chlorosis and 
availability of iron in the soil. Jour. Agr. Research 20: 33-61- 
pl. 5-6.. 1 O 1920. 
