50 
Richards . — The Evolution of 
Experiment 9. 
Two potatoes 5-6 cm. long. These were young potatoes 
of the new year’s crop, unlike the one previously experimented 
with. In the uninjured condition they showed no difference 
in temperature. One cut at 9.00 a.m. 
Duration of Experiment. 
Temperature 
in room. 
Deflec. of 
Galvan. 
Equiv. in °C. 
First day 
9.00 a.m. 
2 4° 3° 
0-0 
o°.oo 
„ 
1 1. 00 ,, 
2 4°*3° 
0-6 
0°.04 
„ 
3.00 p.m. 
24°.IO 
1.6 
0°.ll 
Second day 
9.30 a.m. 
24°-20 
2-0 
0°-14 
1. 00 p.m. 
2 4°*5° 
1.8 
0°.13 
Third day 
12.00 noon 
24°-3o 
1.8 
0°13 
„ 
3.30 p.m. 
2 4°*3° 
i*5 
0°10 
Fourth day 
4.00 „ 
24°.io 
0-0 
0°00 
Experiment 10. 
Two potatoes 5-6 cm. long. Same lot as used in Experi- 
ment 9 . No difference in temperature in uninjured condition. 
One cut at 9.30 a.m. 
Duration of Experiment. 
Temperature 
in room. 
Deflec. of 
Galvan. 
Equiv. in °C. 
First day 
9.30 a.m. 
2 4°-3° 
O'O 
o°.oo 
„ 
11.15 „ 
2 4°*3° 
0.4 
0°.03 
„ 
3.15 p.m. 
24°.TO 
o-8 
O°.O 0 
6.00 ,, 
24°-20 
1-2 
0°-08 
Second day 
9.30 a.m. 
24°-20 
2 -3 
0°.16 
„ 
3.00 p.m. 
2 4° 5° 
1.6 
0°.ll 
Third day 
9.00 a.m. 
2 4°.3° 
1-2 
0°-08 
,, 
3.30 p.m. 
24°.20 
o-8 
0°.06 
Fourth day 
4.00 „ 
24°.IO 
o -3 
0°.02 
