494 
White. — The Influence of Pollination on the 
GYNAECEUMS OF TROPAEOLUM MAI US, L. 
Weight of 
material in 
milligrams . 
Date. 
Condition of 
material. 
Tempera- 
hire. 
Vol. of air 
enclosed. 
Vol. per cent, of 
< 9 2 absorbed by 
material. 
Milligrams of CO 2 
produced by io 
grins, of material 
per hour. 
Duration of 
experiment. 
s, § 
5 <0 1 
1 
40 
3/12/06 
Pollinated dowers 
opened about 6 days 
1 6° C. 
2 c.c. 
3-6 
IJ, 7 
2 hours 
.66 
30 
3/12/06 
Unpollinated dowers 
opened 6 days 
i6° C. 
2 c.c. 
3*5 
IO-I 
2-2 hours 
| 
45 
8/12/06 
Pollinated dowers 
opened 6 days 
20° C. 
2 c.c. 
4-5 
12-0 
2 hours 
.68 
35 
8/12/06 
Unpollinated dowers 
opened 6 days 
20° C. 
2 C.C. 
2-8 
4-4 
2 hours 
• 3 ° 
45 
8/12/06 
Pollinated dowers 
opened 6 days 
20° C. 
2 C.C. 
3-3 
1 1*0 
2 hours 
•75 
35 
8/12/06 
Unpollinated dowers 
opened 6 days 
20° C. 
2 C.C. 
3-9 
8.8 
2 hours 
•43 
; 
Comparing the pollinated with the unpollinated material as before, 
ioo grams of the former were found to produce 347 milligrams of carbon- 
dioxide, while that produced by 100 grams of the latter was 233 milligrams. 
The respiratory quotients of the pollinated material are fairly constant, as 
are also those of the unpollinated, the average quotient in the first case 
being 0-69, and in the second case being 0-41. 
GYNAECEUMS OF CHEIRANTHUS CHEIRI, L. 
Weight of 
material in 
milligrams. 
Date. 
Condition oj 
material. 
Tempera- 
ture. 
Vol. of air 
enclosed. 
Vol. per cent, of 
0 2 absorbed 
by material. 
Milligrams of C0 2 
produced by 10 
grms. of material 
per hour. 
Duration of 
experiment. 
Resp. quotient 
co 2 ^ 
— — volume. 
o 2 
IOO 
X 
o 
o 
o\ 
Pollinated dowers 
opened 5 days 
n°C. 
5 c.c. 
4-6 
15.0 
2 hours 
•69 
IOO 
I 1/10/06 
Unpollinated dowers 
opened 5 days 
ii° C. 
5 c.c. 
2-6 
5*3 
2 hours 
.46 
IOO 
24/10/06 
Pollinated dowers 
opened 4 days 
I2°C. 
5 c.c. 
4-5 
16-0 
2.3 hours 
•53 
IOO 
24/10/06 
Unpollinated dowers 
opened 4 days 
12° C. 
5 c.c. 
4.0 
10-0 
1 
2 hours 
•57 
