76 
IOWA ACADEMY OF SCIENCES, 
RESULTS. 
SPORES OP CORN SMUT IMMERSED IN WATER FOR FIFTEEN MINUTES. 
Temperature ol 
Length of time 
Number of 
Germination. 
water 
spores 
good cells. 
Centigrade. 
were in cell. 
57.5-53 5 
73 hours. 
1 
None. 
57 -53 
73 hours. 
3 
None. 
55 
96 hours. 
3 
None. 
54 -54.5 
130 hours. 
3 
None. 
54 -54.5 
73 hours. 
3 
None. 
54 
71 hours. 
3 
None. 
53 -53.5 
73 hours. 
3 
None. 
53 -53 5 
71 hours. 
3 
None. 
53 5-53 
130 hours. 
2 
None 
53.5 
120 hours. 
3 
None. 
53 
130 hours. 
5 
None. 
51.5 
144 hours. 
3 
A few in one cell germinated. 
51-51.5 
71 hours. 
3 
Several germinated. 
50 
71 hours. 
3 
Several germinated. 
SPORES OP 
CORN SMUT HEATED FIFTEEN MINUTES IN DRY OVEN. 
Temperature of 
Length of time 
Number of 
Germination. 
oven 
spores 
good cells. 
Centigrade. 
were in cell. 
106 5 
130 hours 
10 
None. 
105 5-106 
130 hours. 
8 
None. 
105 
130 hours. 
5 
A few in each cell germinated. 
104.5-105 
48 hours. 
1 
Several germinated. 
101 
73 hours. 
1 
Several germinated. 
103 
73 hours. 
2 
Several germinated. 
96.5-97 
53 hours. 
1 
Germinating vigorously. 
GERMINATION 
OP CORN WHICH HAD BEEN IMMERSED IN HOT WATE 
FOR FIFTEEN MINUTES. 
I. 
Temperature of water Percentage that came 
Average height twelve days after 
Centigrade. 
up 
planting.— Inches. 
Check 
100 
4.55 
55 
100 
4.6 
57 -58 
100 
4.5 
57.5-.5S.5 
100 
4.5 
60.5-61 
95 
4.1 
61.5-63.5 
95 
3.14 
63 -64 5 
85 
3.55 
67.5-68 
20 
1.33 
69 5 
00 
69.5-70 
5 
Barely came through. 
69 5-70.5 
5 
Nine days in coming through. 
70.5-71 
00 
70.5-71 5 
00 
76 -76.5 
00 
77 -77.5 
00 
II. 
Temperature of water Percentage that came 
Average height at end of nine days. 
Centigrade. 
up. 
Inches. 
Check 
100 
3.9 
63 
100 
3 75 
66 
50 
3 
68 -69 
16 
3 
68 -69.5 
50 
1.6 
69 -69.5 
4 
1 
69 -70 
40 
2.8 
70.5-71.5 
00 
