134 
4. R. A. Harper, Columbia University: “Binary fission and 
surface tension in the development of the Volvox colony.” 
(15 min.) 
. W. J. V. Osteruourt, Harvard University: “ The nucleus as 
a center of oxidation.” (Read by title.) 
MELVILLE T. Coox, Rutgers College: “ Modern applications 
of Botany.” (15 min.) 
. B. O. Dopcr, Columbia University: “Mycelium of certain 
species of Gymmosporangium.” (10 min.) 
8. C. L. Sear, Bureau of Plant Industry, U. S. Department of 
Agriculture : “ Pathological problems in the distribution of 
perishable plant products.” (15 min.) 
- ArTHUR Ho tick, Staten Island Association of Arts and 
Sciences: “Some botanical problems which paleobotany 
has helped to solve.” (Read by title. ) 
WILLIAM TRELEASE, University of Illinois: “The ancient 
oaks of America.” (Read by title. ) 
- Marsuatt A. Howe, New York Botanical Garden: “ Further 
notes on the structural dimorphism of sexual and tetra- 
sporic plants in the genus Galaxaura.” (8 min.) 
. Norman Taytor, Brooklyn Botanic Garden: “A quantitative 
study of Raunkiaer’s growth-forms as illustrated by the 
400 commonest species of Long Island, N. Y¥.” (Read 
by title. ) 
ON Ut 
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BOP ME: 
Dr. N. L. Britton, Director-in-Chief, New York Botanical 
Gerden, presiding, 
1, Erwin F. Smirn, Bureau of Plant Industry, U. S. Depart- 
ment of Agriculture: “The relation of crown-gall to other 
overgrowths in plants.” (15 min.) 
2. Hersert S. Jackson, Purdue University: “The Uredinales 
of Oregon.” (10 min.) 
3. W. H. Ranxrn, Cornell University: “The importation of 
phytopathogenes.” (10 min.) 
4. GrorcE M. Rep, University of Missouri: “ Physiological 
races of parasitic fungi.” (10 min.) 
5. GeorcE F. AtrKrnson,' Cornell University: “The genus En- 
dogone.” (15 min.) 
