86 
BOTANICAL GAZETTE 
[ AUGUST 
moist atmosphere until after the completion of elongation. On 
October 10 at 9:00 A.M., sections were cut from it and measure- 
ments of their pseudoparenchyma were made as in the case of 
the first half. These measurements are given in the column on 
the right. 
4. 
Before elongation of 
Longitudinal wall, 
Average, - 
Longitudinal wall 
next to central cavity 
of stipe. 
Average, - 
Longitudinal wall 
in interior of stipe 
Average, - 
28 
24 x 32 (28) 
39.5 
28 ¢ 
24 
30 x 44 (37) 
28 
fe) 
60 x 52 (56) 
35-5 
> 
32 x 28 (30) 
32 
29.7 
Longitudinal wall 
next to central cav- 
ity of stipe. 
Average, - 
Longitudinal wall 
220u thick next to 
central cavity of 
stipe. 
Average, - 
Longitudinal wall 
360u thick in inte- 
rior of stipe wall. 
va 
48 x 40(44)¢ 
36 x 40 (38) 
36 x 44 (40) 
40 
40 
32 x 40 (36) 
4o x 28 (34) 
40 x 32 (36) 
4o x 28 (34) | 
30 
48 x 30 (39) 
37-4 
36 x 52 (44) 
4o x 52 (46) 
44 x 40 (42) 
44 
48 x 34 (41) 
4o x 38 (39) 
40.5 
28 
44 x 24 (34) 
40 
40 
36 x 32 (34) 
32 x 48 (40) 
32 x 40 (36) 
40 x 36 (38) 
