404 INDEX TO AMERICAN BOTANICAL LITERATURE 
Collins, J. L. Culture of Crepis for genetic investigations. 
Jour. Hered. 13: 329-336. f. 23-26. 10 Mr 1923. 
Cook, M. T. Plant cancers. Jour. New York Bot. Gard. 24: 
70. Mr 1923. 
Cook, O. F. Diversity of internode individuals. Jour. Hered. 
13: 323-328. f. 19-22. 10 Mr 1923. 
Cooper, W. S. The recent ecological history of Glacier Bay, 
Alaska: I. The interglacial forests of Glacier Bay. 
Ecology 4: 93-128. f. 1-15. 31 My 1923. 
Davidson, A. New plants from S. California. Bull. S. Cali- 
fornia Acad. Sci. 22: 56. Mr 1923. [Illust.] 
New species in Aster (1) and Dudleya (1). 
Davis, A. R., Hoagland, D. R., & Lipman, C. B. The feeding 
power of plants. Science II 57: 299-301. 9g Mr 1923. 
Denslow, H. M. Passaic County, N[ew] J[ersey]. Torreya 23: 
St, 32. Ap: 1923. 
Reports plants found therein. 
Detlefsen, J. A.,& Ruth, W.A. An orchard of chestnut hybrids. 
Jour. Hered. 13: 305-314. f. 7-13. 10 Mr 1923. 
Dickson, J. G. Influence of soil temperature and moisture on 
the development of the seedling blight of wheat and corn 
caused by Gibberella Saubinetii. Jour. Agr. Research 
23: 837-870. pl. 1-6 + J. I1g. Mit 1623. 
Dodge, B. O. Origin of the central and ostiolar cavities in the 
pycnidia of certain fungus parasites of fruits. Jour. Agr. 
Research 23: 743-760. pl. 1-6 + f.1. 3 Mr 1923. 
Doolittle, S. P., & Walker, M.N. Cross-inoculation studies with 
cucurbit mosaic. Science II 57: 477. 20 Ap 1923. 
Etter, A. Polyembrony developed under experimental conditions 
in certain polypodiaceous ferns. Bull. Torrey Club 50: 
95-108. pl. 4 + f. 1-7. 16 Mr 1923. 
Faris, J. A. Anthracnose of the Boston Fern. Mycologia 15: 
89-95, pl. 8,9. 30 Mr 1923. 
Fawcett, H.S. Gummosis of Citrus. Jour. Agr. Research 24: 
191-236. pl. 1-8. 21 Ap 1923. 
