428 S toward. On Endospermic Respiration in Certain Seeds. 
At the termination of each experiment the material was at once 
inoculated into tubes of 1 % dextrose-wort, and incubated at a temperature 
of 20°— 23 0 C., in order to check the efficiency of the antiseptic reagents under 
the specified experimental conditions. 
6. Table. Experimental Data, Zea. 
Intact Seeds. 
Exp. 1. Seeds steeped in (1) o-i % mercuric chloride, hour; (2) water, 23J hours. 
No. of 
objects. 
Wt. 
grms. 
Vol. 
c.c. 
Temp. 
After hours 
»/ co,%. 
respiration 
Mgrns . 
C0 2 . 
co 2 /o 2 
15 
2 -8802 
4-7 
1 8° 
4 f 5 * 7 1 7 
11-28 
0-03619 
0-65 
Exp. 2. 
Seeds steeped 
in 6 % CuS 0 4 , 24 hours. 
15 
3 * 22 3 T 
4.1 
M 
00 
0 
4 j 5*574 
i 3 - 7 i 
0-03074 
o-88 
Embryos. 
Exp. 3. Intact seeds steeped in (1) o-i % mercuric chloride, f hour; (2) water, 
23J hours; embryos then excised. 
10 0-5218 4-0 20 0 4 ii-oo 5-797 0-3858 0-77 
Exp. 4. Intact seeds steeped in 6 % CuS 0 4 , 24 hours; embryos then excised. 
10 0-4198 5-0 20 0 4 9-218 9-85 0-5024 0-90 
Endosperms. 
Exp. 5. Intact seeds steeped in (1) 6% CuS 0 4 , 6 hours; embryos then excised, 
and endosperms steeped in (2) water, 18 hours. 
15 3-3804 4-8 
1 6° 
4 
I-H54 
18-64 
0-007346 
0-82 
4 -°S 
13° 
2 8i 
5-or6 
8-961 
0-003954 
°-45 
3-8 
1 6° 
5 2 ^ 
11-04 
0-7833 
0-004386 
o -57 
Exp. 6. Intact seeds steeped in 
(1) 6 % CuS 0 4 , 6 
hours; (2) water, 18 
hours ; 
embryos then excised. 
15 3-2629 4.9 
1 6° 
4 
o-86 
18-92 
0-005991 
0-79 
4-65 
1 4 ° 
8 
2-286 
17-38 
0-007509 
0-87 
4 -i 5 
14° 
28J 
5- 2 75 
10-64 
0-004437 
0-56 
3*9 
1 6° 
5 2 
n- 3 1 
0-645 
0-004708 
0-58- 
Exp. 7. Intact seeds steeped in (1) 6% CuS 0 4 , 8-| 
hours; embryos then excised, 
and endosperms 
steeped in 
(2) water, 
15J hours. 
J 5 3 <I 9 I 3-85 
21° 
4 
2-648 
15-96 
0-01457 
0-65 
3'45 
20° 
9 
6-802 
9- 4 8i 
0-01495 
0-64 
3-20 
2 0° 
2 4 
14-96 
0-2564 
0-01140 
o-75 
