66 INDEX TO AMERICAN BOTANICAL LITERATURE 
Berry, E. W. The teaching of paleobotany. Bull. Geol. Soc. 
Amer. 31: 389-394. 30S 1920. 
Blake, S. F. The American species of Maximilianea (Cochlo- 
spermum). Jour. Washington Acad. Sci. 11: 125-132. f. 2, 
19 Mr. 1921. 
Includes I new species from Venezuela. 
Blake, S. F. The anay, a new edible-fruited relative of the 
avocado. Jour. Washington Acad. Sci. 9: 457-462. 4 0 
1919. 
Ee: 2 new species of Hufelandia from Central America. 
Blake, S. F. A preliminary revision of the North American 
and West Indian avocados (Persea spp.) Jour. Washington 
Acad. Sci. 10: 9-21. f. 7, 2. 4 Ja 1920. 
Includes 2 new species. 
Blake, S. F. Revision of Ichthyomethia, a genus of plants used 
for poisoning fish. Jour. Washington Acad. Sci. 9: 241- 
252. 4 My 1919. 
Includes 2 new species from tropical America. 
Blake, S. F. Revision of the true mahoganies (Swietenia). 
Jour. Washington Acad. Sci. 10: 286-297. f. z, 2. 19 My 
1920 
Includes I new species from Mexico. 
Briggs, L. J. The living plant as a physical system. Jour. 
Washington Acad. Sci. 7: 89-111. f. I-6. 19 F 1917. 
Briggs, L. J., & Shantz, H. L. The wilting coefficient for 
different plants and its indirect determination. Jour. 
Washington Acad. Sci. 1: 228-232. 19 N 1911 
Britton, E.G. Bahama mosses. Bryologist 24: 17-19. pl. I. 
25 Jl 1921. 
Britton, E.G., & Holzinger, J.M. The rediscovery of Physcomi- 
trium pygmaeum James. Bryologist 24: 26, 27. 25 Jl 
1921. 
Britton, N. L. Further botanical studies in Trinidad. Jour. 
New York Bot. Gard. 22: 93-102. My 1921. 
Brown, B. Cretaceous Eocene correlation in New Mexico, 
Wyoming, Montana, Alberta. Bull. Geol. Soc. Amer. 25:° 
355-380. 15 S 1914. 
Buchholz J. T. Studies concerning the evolutionary status of 
polycotyledony. Am. Jour. Bot. 6: 106-119. f. 1-25. Mr 
1919. 
