S toward. — On Endospermic Respiration in Certain Seeds . 425 
Diminished Pressure Experiments. 
Exp. 26. Endosperms steeped in saturated aqueous chloroform, 24 hours; then 
exposed to pressure of 10 m.m. for 15 minutes. 
No. of 
objects. 
Wt. 
grms. 
Vol. 
c.c. 
Temp. 
C.° 
After hours 
of 
respiration. 
C0,%. 
0 >%, 
Mgms. 
co 2 . 
co 2/ o t . 
30 
1.765 
3*4 
1 5 ° 
4 
1-383 
16-60 
0-01240 
0-40 
2-7 
2 4 ° 
24 
8-892 
5*434 
0-01070 
o-6i 
Exp. 27. Endosperms steeped 
in saturated 
aqueous 
chloroform, 48 hours, then 
exposed to pressure of 10 
m.m. for 15 minutes. 
30 
1.856 
2*3 
• 3 ° 
4i 
1.477 
17-63 
0-007626 
0-62 
2.05 
12° 
24 
7-65 
6 -73 
0-006624 
o -57 
Pure Endosperms (Series ‘A’). 
Prepared from dry resting seeds ; embryos excised, spermoderm and 
aleurone layer filed off, and endosperm surface scraped with sharp scalpel. 
Summer Experiments. 
Exp. 28. Pure endosperms steeped in water, 14 hours. 
50 3.00 4-25 
23° 2 1-51 
I5.8l 
0-01937 
0.36 
4-00 
22° 2-27 
12-33 
0-01224 
0-29 
Exp. 29. Pure endosperms steeped in water, 24 hours. 
25 1-500 5.5 
19 0 O 0-00 
19*37 
0-00 
5 *o 
20 ° 3 1-733 
18-34 
0-03524 
1-04 
4*5 
21° I9J 6-025 
8-688 
0-01741 
0-54 
Exp. 30. Pure endosperms steeped in water, 42 hours. 
27 i *537 3 *io 
27° 3 I-58l 
17*75 
0-01900 
0*70 
2-90 
24 * 5 ° 54 2-389 
16-04 
0-01477 
o*6o 
2-60 
28° 26 13-38 
2-174 
0-01550 
o *75 
Exp. 31. Pure endosperms steeped in water, 24 hours. 
25 i *374 5 *o 
27 0 2 1-602 
18-32 
0-05210 
0.95 
Experiment 
re-established : 
4*5 
3 i° 2 i -95 
17.91 
0-05632 
0.93 
Experiment 
re-established : 
6-o 
18 0 17! 3-683 
ii *97 
0-01693 
0.45 
Exp. 32. Pure endosperms steeped in saturated aqueous chloroform, 24 hours. 
25 1-298 — 
20 ° O 0-00 
19.40 
0-00 
4-75 
21-5° 3 0-00 
19-16 
0-00 
4 - 5 ° 
21° 5 0-00 
18-39 
0-00 
4-00 
21 ° 22 -| 0-00 
18-24 
0-00 
