go BOTANICAL GAZETTE [ AUGUST | 
elongation at 8:00 a.m. had partially elongated to the length of 
75™™ at 10:00 A.M. The plant was then split longitudinally into 
halves. Sections were cut from the stipe of one of the halves 
as in the preceding experiments and measurements of the pseudo- 
parenchyma were made. These measurements are given below 
in the column on the left. The other half of the plant was sus- 
pended in the supporting apparatus in a moist atmosphere until 
the completion of elongation of its receptaculum, when it meas- 
ured 100™". Sections were cut from its stipe at 3:00 P.M. 
October 15; the measurements of their pseudoparenchyma are 
given below in the column on the right. 
Ref, let: 
£8 
bo 
S 
After completion of elongation. 
vs 
28 x 40 (34)c? 2ac 
28 24 
Longitudinal wall 40x 52 (46) Longitudinal wall 36 
next to central cavity 32 200m thick, next to 36x 52 (44) 
of stipe and in an 44x 40(42) central cavity of 32 
angle. 24 stipe. 36 x 32 (34) 
28 36 x 20 (28) 
32 x 24 (28) Average, Se es 
28 
Average, - 32.2 
44c¢ 
Longitudinal wall 20 
20o0~ thick, next to 40x 32 (36) 
central cavity of 32x 40(36) 
stipe and at a point 36 
near a cross wall. 4o x 36 (38) 
40 x 32 (36) 
28 
Average, - 34.2 
24 16 
30 28 
Longitudinal wall 32 x 28 (30) Longitudinal wall 32 
1604 thick in interior 32 160 thick in inte- 44 
of stipe wall. 28 x 16 (22) rior of stipe wall. 36 
In periphery of an angle. 
