390 INDEX TO AMERICAN BOTANICAL LITERATURE 
Butler, A. E. Notes by a collector in the Colorado Rockies. Nat. 
Hist. 19: 170-181. Mriogrig._ [Illust.] 
Bouquet, A. G. B. Pollination of tomatoes. Oregon Agr. Exp. Sta. 
Bull. 157; 1-29. f. 7-5. Mr 1919. 
Brown, F. B. H. The preparation and treatment of woods for micro- 
scopic study. Bull. Torrey Club 46: 127-150. f. 1-6. 1 My 1919. 
Chamberlain, E. B. Anacamptodon splachnoides var. Tayloriae in 
Missouri. Bryologist 22: 16. 30Ap 1919. 
Chamberlain, C. J. The living cycads. i-xiv+1-172.f. 1-91. Chi- 
cago. 30 Ap 1919. 
Clokey, I. W. Carex notes. Rhodora 21: 83-85. 9 My 1919. 
Includes Carex arapahoensis and C. subimpressa, spp. nov. 
Coit, J. E., & Hodgson, R. W. An investigation of the abnormal 
shedding of young fruits of the Washington navel orange. Univ. 
Calif. Pub. Agr. Sci. 3: 283-368. pl. 25-g2+f. 1-9. 4 Ap 1919. 
Coker, W.C. The Hydnums of North Carolina. Jour. Elisha Mitchell 
Soc. 34: 163-197. pl. 1-29. Mr 1919. 
vat aragamaan ferrugipes, H. carolinianum and Phellodon Cokeri Banker, spp. nov., 
are described. 
Collins, F.S. The green algae of North America, second supplementary 
paper. Tufts College Stud. 47: 1-106. pl. 1-3. 1 Je 1918. 
Collins, F.S. A working key to the genera of North American algae. 
Tufts College Stud. 48: 1-50. N 1918 
Coulter, J. M. The botanical opportunity. Science II. 49: 363-367: 
18 Ap rgI9. 
Cox, P. Dirca palustris L. in New Brunswick. Ottawa Nat. 32: 170. 
Mr 1919. 
Davis, J. J. North American Ascochytae. Trans. Wisconsin Acad. 
Sci. 19: 655-670. I9gI9. 
Davis, J. J. Notes on parasitic fungi in Wisconsin—IV. Trans. 
Wisconsin. Acad. Sci. 19: 671-689. 1919;—V. 690-704. 1919; 
—VI. 705-727. 1919. [Hlvet.] 
Twenty-three new species in various genera are described. 
Deatrick, E. P. The effect of manganese compounds on soils and 
plants. Cornell Agr. Exp. Sta. Mem. 19: 371-402. F 1919. 
Durfee, T. Lichens of the Mt. Monadnock region, N. H.—No. II. 
Bryologist 22: 15, 16. 30 Ap Ig19. 
Durand, E. J. Encalypia laciniata in central New York. ee 
22: 13. 20 Ap 1916: 
