6g 
Richards — The Evolution of 
Experiment 27. 
500 grams small onion-bulbs {Allium Cep a), 3 cm. in diameter, 
in each bell-glass. In warm room three days before beginning 
of experiment. Washed with Formalin to sterilize. 
Duration of Experiment. 
Temp, in 
Bell-Glass A. 
Temp, in 
Bell-Glass B. 
Difference. 
Temperature 
outside. 
July 10 
5.00 p.m. 
26*40 
26.40 
0*00 
25.20 
July 11 
9.00 a.m. 
26*80 
26*80 
0*00 
25*80 
Cut onions in Bell-glass B in quarters 9.15 a.m. 
First day 
11.30 a.m. 
26*80 
27*10 
0*30 
25.80 
1.30 p.m. 
26*80 
27-45 
0*65 
25.70 
3*30 „ 
26*85 
28*20 
1*35 
25.70 
„ 
7 - 3 ° „ 
26*80 
27.40 
1*60 
25.70 
„ 
9*30 „ 
26*80 
27*70 
1*90 
25*80 
Second day 
10.00 a.m. 
26*85 
28*95 
2*10 
25.70 
„ 
12.00 noon 
26*90 
29*20 
2*30 
25*80 
„ 
6.00 p.m. 
26*95 
28.95 
2*00 
25*80 
9.00 ,, 
27*00 
28*80 
1*80 
25.90 
Third day 
8.00 a.m. 
27*00 
28*10 
1-10 
25.90 
12.00 noon 
27*00 
27*80 
0*80 
25.90 
„ 
6.00 p.m. 
26*90 
27.70 
0*80 
25.80 
Fourth day 
8.00 a.m. 
26*80 
27.30 
0*50 
25.70 
„ 
1. 00 p.m. 
26*80 
27.25 
0.4=5 
25*80 
6.00 „ 
26*85 
27-05 
0*20 
25-90 
Fifth day 
9.30 a.m. 
26-90 
27*00 
0*10 
25.80 
The onions in Bell-glass B were removed and then replaced with coke. 
The temperature of the bell-glass with living onions above that 
of the other is shown below. 
Evening 
5.00 p.m. 
26*80 
25.60 
1*20 
25.70 
Next morning 9.00 a.m. 
26*90 
25*80 
1*10 
25*80 
