88 INDEX TO AMERICAN BOTANICAL LITERATURE 
Brenckle, J. F. North Dakota Fungi—I. Mycologia 9: 275-293. 
24.S- 1917. 
Britton, N. L. Harrisia gracilis. Addisonia 2: 41, 42. pl. 61. 29S 
IQI7. 
Britton, N. L. Harrisia Martini. Addisonia 2: 55, 56. $1, 08. 205 
1917. 
Brooks, S.C. A new method of studying permeability. Bot. Gaz. 64: 
S0eat7. f,-2,:22 160 10t7. 
Brown, P. E., & Hitchcock, E. B. The effects of alkali salts on nitri- 
fication. Soil Sci. 4: 207-229. f. 1-14. S 1917. 
_ Brown, W. H., & Heise, G. W. The relation between light intensity 
and carbon dioxide assimilation. Philip. Jour. Sci. 12: [Bot.] 85-97. 
t,o. Mir T6177. 
Bunyard, E. A. The history and development of the strawberry. 
Jour. Internat. Gard. Club 1: 69-90. Au 1917. [Illust.] 
Burnham, S. H., & Latham, R.A. Corrections of the flora of the town 
of Southold. Torreya 17: 164. 20 1917. 
Burrill, T. J., & Hansen, R. Is symbiosis possible between legume 
bacteria and non-legume plants? Illinois Agr. Exp. Sta. Bull. 202: 
TiS“*61.. OF 2-17. Jl 1917: 
Burt, E.A. Odontia Sacchari and O. saccharicola, new species on sugar- 
cane. Ann. Missouri Bot. Gard. 4: 233. f. r, 2. 20S 1917. 
Burt, E. A. The Thelephoraceae of North America—VIII. Conto- 
phora. Ann. Missouri Bot. Gard. 4: 237-269. 20S 1917. 
Includes Coniophora inflata, C. vaga, C. alvellanea, C. Harperi, and C. flava, 
Spp. nov. 
Butters, F. K. Taxonomic and geographic studies in North American 
ferns. Rhodora 19: 169-216. pl. 123 +f. 1-6. 11 O 1917. 
Also published in Contr. Gray Herb. 51: 170-216. 11 O 1917. 
Cary, M. Life zone investigations in Wyoming. North Am. Fauna 
42: 7-95. pl 15 +f. 1-17... 3.01917. 
Cockerell, T. D. A. Somatic mutations in sunflowers. Jour. Heredity 
8: 467-470. f. 10-12. O 1917. 
Coons, G. H., & Levin, E. The leaf-spot disease of tomato. Michigan 
Agr. Exp. Sta. Spec. Bull. 81: 1-15. f. 1-7. Je 1917. 
Cooper, W.S. Redwoods, rainfall and fog. Plant World 20: 179-189. 
TY; a Je tor. 
i, C. S. Seed production in apples. Illinois Agr. Exp. Sta. 
Bull. 203: 185-213. 7. 1-8. Au 1917. 
