Wounded Plants. 
575 
Experiment 31 . 
52 grams of young leaves of Viburnum odoratissimum from 
green-house, the temperature of which was about i 8 °- 2 o°. 
Light excluded from receiver. Air-current, 3-5 litres per hour. 
Date. 
Time. 
Tempera- 
ture. 
mg. C0 2 
produced 
per hour. 
ii. 3. ’96 
10.37 - H.37 a.m. 
20°-4 
11-40 
99 
H -37 - 12.37 p.m. 
20°-4 
12-00 
Leaves slit four or five times longitudinally, but pieces not 
actually separated. 
ii. 3. ’96 
1. 10 - 2.10 p.m. 
20°-2 
16-00 
9) 
2.10 - 3.10 „ 
20°- 2 
17-20 
99 
3.10 - 4.10 „ 
2o°-5 
15.40 
>> 
4.10 - 5.10 „ 
20° -4 
15-40 
ii. 4. ’96 
1 1. 00 - 12.00 m. 
20° -6 
12-00 
59 
4.00 - 5.00 p.m. 
20°-6 
12-00 
Experiment 32 . 
50 grams of leaves of Acacia lophocantha , growing in green- 
house at temperature of about 25 0 . In dark. Air-current, 
3-5 litres per hour. Determination first made of respiration 
excited by injury due to removal from stem. 
Date. 
Time. 
Tempera- 
ture. 
mg. C0 2 
produced 
per hour. 
ii. 24. ’96 
10.00 - 11. 00 a.m. 
20°-3 
14-00 
1 99 
1 1. 00 - 12.00 m. 
20°-3 
1 5 *6o 
99 
12.00 - 1.00 p.m. 
20°-2 
15-80 
)} 
1. 00 - 2.00 „ 
20°-2 
I 5-30 
99 
2.00 — 3.00 ,, 
20°-5 
18-00 
>> 
3.00- 4.00 „ 
2o°-5 
17.20 
99 
4.00 - 5.00 „ 
20°-4 
16-40 
59 
5.00 - 6.00 ,, 
20°-2 
15.60 
99 
6.00 - 7.00 „ 
20°-2 
15.40 
Pinnae cut off and main stem of leaf cut in pieces. 
ii. 25. ’96 
10.10 - 11. 10 a.m. 
20°-4 
17-00 
99 
11. 10 - 12.10 p.m. 
20°-4 
19-00 
99 
12.10- 1. 10 ,, 
20°-3 
1 7-80 
99 
1. 10- 3.10 ,, 
20°-2 
1 6-oo* 
99 
3.10- 4.10 „ 
20°-5 
14-80 
Cut pinnules off and cut petioles lengthwise. 
ii. 25. ’96 
5.10 - 6.10 p.m. 
20°-2 
24-40 
6.10- 7.10 „ 
20°- 
24-80 
99 
7.10 - 9.10 ,, 
20°*4 
21-30* 
* Reduced to value of i hour. 
