430 Stoward. — On Endospermic Respiration in Certain Seeds. 
Endosperms derived from Germinated Seeds. 
Exp. 15. Intact seeds steeped in water, 25 hours ; then washed with 0*4 % formalde- 
hyde, and germinated in sterilized sand at temperature of 2o°-2i°C. for 
68 hours. Ten seeds then selected, and after amputation of their plumules 
and radicles these were steeped in o-i % mercuric chloride for \ hour. They 
were then thoroughly washed with sterilized water, and their embryos excised. 
No. of 
objects. 
Wt. 
grins. 
Vol. 
c.c. 
Temp. 
C.° 
After hours 
of . 
e spiral ton. 
co % %. 
o»%. 
'Mgms. 
CO a . 
co 2 /o 2 
IO 
1-8698 
4.0 
20° 
8 
3 - 2 H 
14-66 
0*01571 
o-6i 
3-7 
19 0 
25 
8-469 
2 -99 
0-01231 
0-49 
Exp. 16. Intact seeds steeped in (1) o-i % mercuric chloride for hour; (2) water, 
32 hours, and germinated in sterilized sand at a temperature of 2o°-2i°C. 
for 64 hours. After amputation of their radicles and plumules, and steepin 
in o-i% mercuric chloride for 10 minutes, followed by thorough washin 
with sterilized water, the embryos were excised. 
15 2-7426 2-7 21 0 8 6-22 ii-o 0-01396 0-69 
2- 5 21 0 24 14-56 i-i54 0-01008 0-77 
Endosperms prepared from Dry Resting Seeds, and steeped in either (1) saturated 
aqueous chloroform, or (2) toluene, or (3) 4 % formaldehyde. 
Exp. 17. Endosperms steeped in saturated aqueous chloroform, 24 hours. 
J 5 3-4375 3*4 20° 8 o-oo 19-14 o-oo 
3- 15 19 0 24 o-oo 19-21 o-oo 
Exp. 18. Endosperms steeped in saturated aqueous chloroform, 24 hours. 
15 2-867 3'7 20° 8 o-oo 18-73 0,00 
Exp. 19. Endosperms steeped in saturated aqueous chloroform, 48 hours. 
15 3-1 181 4-0 17 0 8 o-oo 19*36 o-oo 
3- 75 20 0 25J o-oo 19-18 o-oo 
Exp. 20. Endosperms steeped in saturated aqueous toluene, 24 hours. 
15 3* I 9 I 7 4* 2 5 2 °° 8 o-oo 19-29 o-oo 
4- 00 19 0 24 o-oo 19-20 o-oo 
Exp. 21. Endosperms steeped in saturated aqueous toluene, 24 hours. 
15 2 -7958 4-15 20 0 8 o-oo 19-56 o-oo 
3-90 20 0 23 o-oo 19-50 o-oo 
Exp. 22. Endosperms steeped in saturated aqueous toluene, 48 hours. 
15 2-9681 3-6 17 0 8 o-oo 19-04 o-oo 
3-4 20 0 24 o-oo 18-79 o-oo 
bD bD 
