g2 BOTANICAL GAZETTE [ AUGUST 
rm H 
48 Transverse parti- 28 
Longitudinal wall. 48 x 36 (42) tion wall in interior 40 x 48 (44) 
40 stipe wall. 40 x 48 (44) 
28 40 x 36 (38) 
4 Average, - 47.7 
Average, - 38.6 
Is has already been pointed out that these averages agree 
well with those of Experiments 6 and 7, in which equally vigor- 
ous plants were used. 
MIDDLEBURY COLLEGE, 
Middlebury, Vt. 
