211 
“Are Tetracentron, Trochodendron and Drimys 
T 
specialized or primitive types?’’ The paper 
S presented by Irving W. a! 
illustrated by remarkable photomicrographs 
wn by t tern. Discussi 
nee R. A. Harper, and D. T. MacDougal 
ollowed. 
ELIZABETH G. BRITTON. 
“Mosses from Florida.” Discussion by R. A. 
Harper and D. T. MacDougal. 
ARTHUR H. CHIVERS. 
“Directing factors in the teaching of botany.” 
Joun H. BARNHART. 
“The genera of Testbulasucess® Discussion 
and remarks by R. A. Harper and G. F. 
tkinson 
nson. 
R. ELLsworts CALL. 
“Flora of Mammoth Cave, Kentucky.” Illus- 
trated oe lantern slides. Remarks by N. L. 
Britton AH 
CECIL ane: 
“Obs eve Hone on sex relations in Mercurialis 
cussion by G. F. Atkinson and 
R. ve Harper. 
Epwin W. HuMpPHREYS. 
“Triassic ate from Sonora, Mexico.’ 
Norman Tay. 
“A white- ene wamp on Long Island and its 
significance.” Illustrated by lantern slides. 
Discussed a N.L. Britton and R. A. H r. 
> 
e 
> 
‘a 
iI 
wn 
is 
wT pee of eee Illustrated by speci- 
mens. Remarks and discussion by D. T. 
MacDougal, J. B. S. Norton, N. L. Britton, 
. W. Humphreys. 
Seventy: four persons were present at this morning session. 
Lunch in the Museum Building. 
