212 
2:30-4:00 Session for the reading of papers, under the chair 
anship of C. SruART GAGER 
“On the nature of types.” Illustrated by 
lantern slides. Discussed by E. W. Sinnott. 
MarsHALu A. Howe an D. Hoyt 
“Notes on some marine algae from the vicinity 
of Beaufort, North Carolina.’’ Presented 
by Marshall A. Howe. Illustrated by lan- 
tern slides. Remarks by E. G. Britton. 
MicHAEL Lev 
7 aera oe in the pollen mother-cells 
of some species of Drosera.” Illustrated by 
charts. 
Harry B. SHAw. 
“Self, close, and cross pollination of beets.” 
Illustrated by lantern slides 
C. Stuart GaGER 
“Present status of the problem of the effect of 
radium rays on plant life.” Discussed by 
R.A. H ae 
EDMUND W. SINN 
is 
flora.”’” Discussion by Norman Taylor, P. A. 
Rydberg, and D. T. MacDougal 
RAV. 
“A botanical trip to North Wales in June.” 
Illustrated by lantern slides. 
or RTON. 
“ Allodus i in North America.” 
GrEorGE V. Nas 
“The Van nae collection of colored lantern 
slides of plants.” Read by ti 
IN. 
“‘Notes on some American filmy ferns.” Read 
by title. 
MEL. T. Cook. 
