INDEX TO AMERICAN BOTANICAL LITERATURE 157 
Darling, C. A. Chromosome behavior in Acer platanoides L. 
Am. Jour. Bot. 10: 450-458. pl. 31,32. 2301923. 
Davidson, J. Is gaseous nitrogen a product of seedling metabol- 
ism? Bot. Gaz. 76: 95-101. 15S 1923. 
Dietz, S. M. The réle of the genus Rhamnus in the dissemina- 
tion of crown rust. U.S. Dept. Agr. Bull. 1162: 1-18. 
f. 1-8, S 108% 
Dodge, B.O. Effect of the orange-rusts of Rubus on the devel- 
opment and distribution of stomata. Jour. Agr. Research 
25: 405-500. $1. 7. 22:5 192%. 
Dodge, B.O. A new type of orange-rust on blackberry. Jour. 
Agr. Research 25: 491-494. 22S 1923. 
Dorsey, M. J. & Strausbaugh, P. D. Plum investigations 
I. Winter injury to plum during dormancy. Bot. Gaz. 76: 
113-143.. 96°20, 21-75 0 193%. 
Durland, W. D. Notes on quebracho colorado. Jour. For. 21: 
600-603. O 1923 
Quebrachia Lorentzti Griseb. of Argentina. 
Ellen, M., Sister. The Marchantiaceae of Sinsinawa Mound 
[Wisconsin]. Am. Midl. Nat. 8: 222-224. S 1923. 
Elliott,C. A bacterial stripe disease of Proso millet. Jour. Agr. 
Research 26: 151-160. pl. 1-4. 27 01923. 
Emberger,L. Recherches sur le protoplasme des Lycopodinées. 
Arch. Anat. Microscop. 19: 309-348. pl. 13-22. 10 1923. 
Fernald, M. L. Lycopodium sabinaefolium and L.  sitchense. 
Rhodora 25: 166, 167. 29S 1923. 
Fernald, M.L. The American variety of Scheuchzeria palustris- 
Rhodora 25: 177-179. 260 1923. 
Fonseca, O. da & Arealeao, A-E. de. Sur la systématique des 
champignons produisant des chromoblastomycosis. Compt. 
Rend. Soc. Biol. 89: 762, 763. 13 O 1923. 
