152 INDEX TO AMERICAN BOTANICAL LITERATURE 
Bisset, P. Prolification in a double-flowered form of Calendula 
officinalis. Jour. Heredity O: 324-425. J. 12,.13. .12 D 1918. 
Brooks, .M. M. Comparative studies on respiration—III. The 
effect of ether on the respiration and growth of Bacillus subtilis. 
Jour. Gen. Physiol. 1: 193-201. f. 17-5. N 1918. 
Brown, B.S. Fruiting of apple trees every other year. Jour. Heredity 
9: 304-306. f. 3. 12 D 1918. 
Brown, E. D. W. Apogamy in Camptosorus rhizophyllus. Bull. 
Torrey Club 46: 27-30. pl. 2. 20 Ja 1919. 
Brown, F. W. Orange like fruit from a lemon tree. Jour. Heredity 
9: 308-310. f. 4-6. 12 D 1918. 
Chapman, G. H. Mosaic disease of tobacco. Massachusett Agr. 
Exp. Sta. Bull. 175:°73-117: pl. 1-5... My 1917. . 
Cruess, W. V. The fermentation organisms of California grapes. 
Univ. Calif. Publ. Agr. Sci. 4: 1-66. pl. 1, 2 +f. 1-15. 31 D'1918. 
Curtis, O. F. Stimulation of root growth in cuttings by treatment 
with chemical compounds. Cornell Agr. Exp. Sta. Mem. 14: 
71-138. f. -8. Au 1918. 
Dixon, R., & Fitch, F. E. The human side of trees. i-xxi + 1-199. 
New York. 1918. 
Dosdall, L. Overwintering of the aeciospores of Cronartium ribicola 
Fisher. Phytopathology 8: 619. D 1918. 
Elliott, J. A. Storage rots of sweet potatoes., Arkansas Agr. Exp. 
Sta. Bull. 144: 1-15. pl. 1-4. My 1918. 
Elliott, J. A. Wood-rots of peach trees caused by Coriolus prolificans 
and C. versicolor. Phytopathology 8: 615-617. f. 1, 2. D 1918. 
Ewing, E. C. A study of certain environmental factors and varietal 
differences influencing the fruiting of cotton. Mississippi Agr. 
Exp. Sta. Bull. 8: 1-93. D 1917. 
Fitzpatrick, T. J. Corylus rostrata in lowa. Iowa Nat. 3: 44, 45. 
Ap 1917. 
Fitzpatrick, T. J. The fern flora of northeastern Iowa. Am. Fern 
Jour. 8: 97-103. 20 Ja 1919. 
Floyd, F. G. A crested fern used in landscape planting. Am. Fern 
Jour. 8: 110-114. 20 Ja 1919. 
Folsom, D. The influence of certain environmental conditions, espe- 
cially water supply, upon form and structurein Ranunculus. Physiol. 
Researches 2: 209-276. f. I-24. D 1918. 
