556 
Richards . — The Respiration of 
Experiment 4 . 
8 potato-tubers, 300 grams. Give only a trace of respira- 
tion in uninjured condition. Tubers quartered, washed, and 
dried. Air-current, 3-5 litres per hour. 
Date. 
Time. 
Tempera- 
ture. 
mg. C0 2 
produced 
per hour. 
xi. 22. ’95 
9.15 — 10.15 a.m. 
20° 
1 3 - 4 ° 
55 
10.15 -1105 „ 
20° 
9-00 
55 
11.15 - 12.15 P* m - 
20°-5 
11.60 
55 
12.15- 1.15 „ 
2 C °-5 
n-8o 
55 
II 5 - 3 -i 5 » 
20°*7 
14-40* 
55 
3- T 5 ~ 4- T 5 „ 
20° 6 
14-80 
55 
4- 1 5 - 5.15 » 
20°-8 
I 5 ‘ 7 ° 
55 
5.15- 6.15 „ 
20° -6 
1 6-oo 
55 
6.15- 7-15 „ 
20°-5 
16-80 
xi. 23. ’95 
9.15 - 10.15 a.m. 
20°-8 
15-60 
55 
10.15 -1 1. 15 ,, 
20°. 6 
15.60 
55 
11.15 - 1 2 * I 5 p.m. 
20°.8 
16-00 
55 
12.15- I-I5 >> 
2 1 °«0 
18-60 
55 
1. 15 - 3-15 » 
20°. 7 
18-40* 
xi. 24. ’95 
11.30 -12.30 ,, 
20°. 5 
i 3 - 6 ° 
xi. 29. ’95 
6-15- 7.15 „ 
21° 
7.40 
xii. 3 - ’95 
8.15- 9.15 a.m. 
20°-8 
3-20 
xii. 4. ’95 
8.15 - 9- T 5 „ 
20°. 8 
i-6o 
Experiment 5 . 
1 1 potatoes, 300 grams. Cut into eight pieces. The object 
of this experiment was to verify the previous observations 
regarding the production of C0 2 during the first few hours 
after injury. Air-current, 3-5 litres. 
Date. 
Time. 
Temp. 
mg CO a 
produced 
per hour. 
ii. 20. ’96 
9.40 - 10.40 a.m. 
20°. 8 
51-20 
55 
10 40 - 1 1.40 ,, 
2°°-7 
36-00 
jj 
1 1.40 - 1 2.40 p.m. 
20°*7 
23-00 
55 
12.40 - 2.10 ,, 
20°-6 
21.40* 
55 
2.10- 3.10 „ 
2 0°-4 
2I-8o 
55 
3.10— 4.10 ,, 
2 1 °-0 
2I-6o 
95 
4.10- 5.10 „ 
20°-8 
23.40 
55 
5.10- 6.10 ,, 
20°- 8 
23-60 
ii. 21. ’96 
9.00 - 10.00 a.m. 
20°.7 
30.00 
55 
. 
10.00 - 1 1.00 „ 
20°»7 
33.60 
* Reduced to value of i hour. 
