236 INDEX TO AMERICAN BOTANICAL LITERATURE 
Bibb, L. B. Summation of dissimilar stimuli applied to leaflets of 
sensitive brier (Schrankia). Jour. Gen. Physiol. 3: 523-526. f. 1-3. 
20 Mr 1ig2t. 
Blake, S. F. Neomillspaughia, a new genus of Polygonaceae, with 
remarks on related genera. Bull. Torrey Club 48: 77-88. i. r. 
8 Mr 1921. 
[Blakeslee, A. F.] Inheritance of germinal peculiarities.— Portulaca, 
Datura. Carnegie Inst. Washington Year Book 19: 130-132. 3 F 
1921. 
Boédeker, F. Die Bliite der Mamillaria De Laetiana Quehl. Monatsschr. 
Kakteenk. 27: 21. Ja 1917. 
Bédeker, F. Weitere Beobachtungen, Erfahrungen und Ansichten. 
Monatsschr. Kakteenk. 26: 145-150. O 1916. 
Discussion of the identity of various Cactaceae. 
Bédeker, F. Nochmals weitere Beobachtungen, Erfahrungen und 
Ansichten. Monatsschr. Kakteenk. 27: 1-6. Ja 1917. [Illust.] 
Further discussion of various species of Cactaceae. 
Britten, J. Thomas Walter (1740-88) and his grass. Jour. Bot. 59: 
9-75. Mr 1921. : 
Britton, E.G. The preservation of our native plants. Jour. New York 
Bot. Gard. 22: 40-44. F 1921 
Brooks, M. M. Comparative studies on respiration, XV. The effect 
of bile salts and of saponin upon respiration. Jour. Gen. Physiol. 3: 
827-532. 3. 37-3. 20 Mr i021. 
Brown, J. P. Catalpa speciosa in den Vereinigten Staaten von Nord- 
amerika. Mitt. Deutsch. Dend. Ges. 1920: 80-95. pl. 17-20. 
1920. 
Compiled and brought together by A. Steffer. 
simconner: ge Uber die Wasserleitungsbahnen in den interkalaren 
Soares Flora 114: 119-186. 1920. 
Among plants studied is *Fredestantia virgini 
Cannon, W. A. Effect of a diminished oxygen supply in the soil on the 
rate of the growth of roots. Carnegie Inst. Washington Year Book 
19: 59-61. 3 F 1921. 
Cannon, W. A. Some structural features of the chlorophyll-bearing 
organs of perennials of South Australia. Carnegie Inst. Washington 
Year Book 19: 80, 81. 3 F 1921. 
Cannon, W. A., & Free, E. E. Anaerobic experiments with helium. 
Carnegie Inst. Washington Year Book 19: 61, 62: 3 F 1921. 
Cannon, W.A., & Free, E.E. Root adaptation to deficient soil aeration. 
Carnegie Inst. Washington Year Book 19: 62. 3 F 1921. 
