1104 
Journal of Agricultural Research 
Vol. XXVIII, No. 11 
samples of grain for moisture analyses, and taking temperature readings at the 
time the grain was run from bin to bin, Mr. Baston gathered the data presented 
in Table I. 
From these data he concludes that the temperature was highest in the bins 
which were infested, that the moisture content was lower in the bins which 
showed a trace of infestation or a pronounced infestation with weevil, and that 
these facts indicate that the moisture was not the factor that caused the rise 
in temperature. “Eliminating the factors of moisture, damage, and time in 
storage, one by one,” the data indicate “plainly,” so he states, “that the rising 
temperature was caused by the weevil and the beetle.” These conclusions are 
shown diagrammatically in figure 1, the left-hand end of which represents the 
conditions of temperature and moisture for the uninfested grain, the right-hand 
end those for the highly infested grain, and the center those for that with a trac e 
of infestation. 
| 
I 
Fig. 1.—Diagram showing average condition of 977 bins of wheat handled at Buffalo, N. Y., in 1919-20 
Table I .—Correlation of general condition of wheat in 977 bins , showing average 
moisture y average temperature , and other data , for good , slightly infested , and 
highly infested wheat 
General condition 
Average 
moisture 
content 
Damaged 
wheat 
(average) 
Time in 
storage 
Number 
of bins 
of wheat 
Percent¬ 
age of 
bins of 
wheat 
Average 
temper¬ 
ature 
Good. Free of insects___ 
12.6 
11.3 
12.2 
Per cent 
3.1 
2.9 
2.9 
Days 
105 
118 
90 
374 
396 
207 
38.3 
40.5 
21.2 
°F. 
66.2 
69.3 
78.3 
Showing trace of insects .. 
Highly infested.... 
With these conclusions, entomologists who have had experience with seed- 
infesting insects can readily agree. Considering the numerous instances of 
heating seeds with which the writers have come in contact during the past few 
years, it seems strange that in 1892 Doran should state ( 6 , 7) that he knew of 
