558 
Richards . — The Respiration of 
Experiment 8. 
6 potatoes, 310 grams. To determine effect of oxygen. 
Oxygen from gasometer 94 °/ o . Before taking determinations 
with O a strong current was run through the apparatus until 
practically pure O came off. Current, 3-5 litres per hour. 
Date. 
Time. 
Tempera- 
ture. 
mg. C0 2 
produced 
per hour. 
Medium. 
xii. 8. ’95 
9.00 - ii .00 a.m. 
20°. 4 
2-IO* 
Air 
yy 
3.00 - 5.00 p.m. 
20°-5 
2-40* 
Oxygen 
Potatoes quartered, washed, and dried. First determination, 
injury. 
hours after 
xii. 9. ’95 
10.00 - 1 1. 00 a.m. 
20°-5 
io-6o 
Air 
yy 
1 1. 00 - 12.00 m. 
20°-5 
13.80 
Air 
yy 
i2.oo~ 1. 00 p.m. 
20°-3 
1360 
Air 
>> 
j.oo- 3.00 ,, 
20°-8 
I3-50* 
Air 
yy 
3.40 - 4.40 „ 
20°. 5 
16-60 
Oxygen 
>> 
4.40 - 5.40 „ 
20°.5 
19-80 
Oxygen 
xii. 10. ’95 
9.30 - 10.30 a.m. 
20° 
21*40 
Air 
yy 
11.00 - 12.00 m. 
20°.8 
23-40 
Oxygen 
yy 
12.00- 1.00 p.m. 
20°-6 
21-40 
Oxygen 
» 
1.20- 3.20 ,, 
20°-5 
21-35 
Air 
yy 
3.20- 5.20 „ 
20 0 »4 
2 2-00 
Air* 
* Reduced to value of i hour. 
