66 
T have drawn them to a small plat of wheat sown in a secluded corner 
of my garden, in the midst of town, fully half a mile from any wheat 
fields. - But, be this as it may, a second brood of larve in June would 
be rather difficult to sustain, as the puparia of the earlier part of the 
month are known to remain in that stage until September. Neither 
have I been able to secure any better evidence of a brood originating in 
volunteer wheat during July and August. Puparia are to be found 
every year from one end of the State to the other in this volunteer 
wheat, but here in Indiana I have never found these sufficiently numer- 
ous to imply a distinct brood. Professor Forbes and his assistants, 
working in Illinois, appear to have a greater confidence in this extra 
brood than myself, although, as will appear farther on, our experiments 
were carried on the one perfectly independent of the other, though only 
a few miles apart. 
My attention has been called to the condition of this field near Prince- 
ton, by Honorable Samuel Hargrove, member of the board of trustees of 
Purdue University, and also a member of the State Board of Agricul- 
ture, who willingly agreed to further aid in the investigations by sow- 
ing for me plats of wheat at intervals of about 2 weeks, beginning as 
soon as possible after harvest. Being detained in Louisiana myself 
until nearly the 1st of August, and the weather being exceedingly dry, 
no plats were sown until August 4, 1887, followed by another on August 
22,and a third September 5. These were sown on one of Mr. Hargrove’s 
farms, about 10 miles northeast of Princeton. 
The first two sowings, owing to the drought, came up sparingly and 
about the same time. The third was also affected by drought, and did 
not come up until about the Ist of October. These plats were sown 
along the lower edge of a high, rolling stubble field, which had been 
too dry to plow, and in which I had found an abundance of flaxseeds 
the preceding June. 
These plats were examined by me on October 8. The two earlier- 
sown plats had thrown up a good growth of plants, which had tillered 
finely, being along a low ravine. On these plats I found a number of 
larvee, which were nearly or quite grown, and a less number of flaxseeds, 
one of which was empty. Besides these, the plants were literally alive 
with very young larve, so young, in fact, that they had not yet lost 
their reddish tint. The third plat had sent up the normal number of 
plants, which were now in the second leaf. These plants had not ap- 
peared in time for the earlier deposited eggs, but were even more seriously 
infested by young larve than the plants of the two earlier plats. One 
of the plants from the last plat is before me, and contains twenty-six 
young larve, all of which must have hatched from the eggs only a few 
days prior to my observations. Now, from whence did the progenitors 
of these young larve originate? Most assuredly not from volunteer 
wheat, because there was none. Not from my earlier-sown plats, else 
these would have shown the effect. There are, it seems to me, but two 
