INDEX TO AMERICAN BOTANICAL LITERATURE 187 
Victorin, Fr. Random botanical notes—III. Isle-aux-Coudres, Que- 
bec. Can. Field Natur. 34: 114-117. D 1919. 
Viehover, A., Clevenger, J. F., & Ewing, C. O. Studies in mustard 
seeds and substitutes: I. Chinese colza, Brassica campestris chino- 
leifera Viehover. Jour. Agr. Research 20: 117-140. pl. ro-z9. 
15 O 1920. 
Visher, S. S. Geography of South Dakota. Univ. South Dakota 
Bull. 8: 7-189. 
Contains chapter on biogeography. 
Ward, H. A. A new station for Gaylussacia brachycera. Rhodora 
22° 1607. 1082.7 4) FO20, 
Waksman, S. A. Studies in the metabolism of Actinomycetes—III. 
Nitrogen metabolism. Jour. Bact. 5: 1-30. Ja 1920. 
Waksman, S. A., & Joffe, J.S. Studies in the metabolism of Actinomy- 
cetes. IV. Changes in reaction as a result of the growth of Actin- 
omycetes upon culture media. Jour. Bact. 5: 31-48. Ja 1920. 
Warming, E. Caryophyllaceae. Meddel. Gronland 37: 231-342. f. 
2 
Warner, M. F. The dates of Rheede’s “Hortus Malabaricus.’’ Jour. 
Bot. 48: 291, 292. D 1920. 
Waters, C. E. The Society for the Prevention of the Wild. Am. 
Fern Jour. 10: 115-119. 7 F 1921. 
Watson, E. E. On the occurrence of root-hairs on old roots of Helian- 
thus rigidus. Ann. Rep. Michigan Acad. Sci. 21: 235. Jl 1920. 
Weatherby, C. A. What the Latin names mean—I. Am. Fern 
Jour. 10: 113-115. 7 F 1921. 
Welton, F. A. Longevity of seeds. Bull. Ohio Agr. Exp. Sta. 6: 
18-24. 1921. [Illust.] 
West, A. P., & Brown, W. H. Philippine resins, gums, seed oils, and 
f essential oils. Philipp. Bur. For. Bull. 20: 1-230. f. 1-73. 1920. 
West, F. L., & Edlefsen, N. E. Freezing of fruit buds. Jour. Agr. 
Research 20: 655-662. 15 Ja 1921. 
Wester, P. J. The cultivation and uses of roselle [ Hibiscus sabadariffa 
L.]. Philipp. Agr. Rev. 13: 89-99. pl. 8-12. 1920. 
Wherry, E. T. Asplenium Gravesii in Pennsylvania. Am. Fern 
Jour. 10: 119-121. 7 F 1921. 
Wherry, E. T. The soil reactions of certain rock ferns. Am. Fern 
Jour. 10: 15-22; 45-52. 1920 
