8° BULLETIN 708, U. S. DEPARTMENT OF AGRICULTURE. 
begun in August, while the temperature was high and the weevils. 
very active. By the following December all the weevils were dead 
and dry, none had reached the grain, and no evidence could be 
: found that they had 
attempted to force 
their way through 
the shuck protection 
to the grain. 
As a logical part of 
this test, some wee- 
_vils were confined in 
Jars with ears of corn 
from which theshucks 
had been removed. 
This part of the test 
was identical with 
the first, with the ex- 
ception that in this 
case there was no 
shuck protection. 
With four or five ex- 
ceptions, the wee- 
vils were alive at 
the finalexamination 
and had done a very 
serious amount of 
damage to all the 
ears. 
This test makes it 
evident that while it 
seems that these in- 
sects should be quite 
Fic. 3.—White Rice pop corn damaged by weevils. These insects can able to cut through 
eat the hardest corn. 
coyering that corn may have, they, in fact, will not do so, 
even though they must starve if they do not. 
RESULTS OF INVESTIGATIONS IN 1916. 
On October 6, 1916, at Thomasville, Ga., a quantity of corn was 
selected from a field and examined for ear damage. The variety in 
this case was one of those used in the 1915 investigations. As may 
be gathered from the data, it had a wide range of protective adapta- 
tion. As the field was located about one-fourth of a mile from places 
where old infested corn was stored, the opportunity for weevil in- 
festation was very good. The worm damage is believed to have been 
exceptionally severe. 
all of the shuck 
