ARTIFICIAL INFECTION FIELD EXPERIMENTS. 35 
Montgomery County, Independence. — The experiments conducted 
at Independence were under the supervision of Leslie A. Kenoyer, a 
graduate in science of the University of Kansas. Mr. Kenoyer lived 
at home, on the farm, while carrying on his work, and was therefore 
able by constant residence to watch the progress of events in a most 
satisfactory manner. His observations, however, were checked up 
from time to time. His final report is given below in full. 
Mr. L. A. Kenoyer's Report of His Experiments with Sporotrichtjm and 
the Chinch Bug. 
My observations on chinch bugs near Independence, Montgomery 
County, Kans., covered a period of nearly three months — from March 
20 until June 14, 1910. 
The bugs were found to occur in most grain fields. They were, 
as a rule, most abundant near the borders of the field, and especially 
adjoining hedges of Osage orange. These hedges are numerous in 
this county and they appear to be excellent harboring places for the 
bugs, chiefly, it appears, by reason of the weeds and grass which 
collect there. Even spring burning does not seem to destroy the 
bugs. 
Dr. F. H. Billings and I planted bush beans around several selected 
plots of grain about April 15. The plots chosen were 50 feet 
square. A trench 1 foot wide was made around each and four simi- 
lar trenches were placed across the square at intervals of 10 feet — 
the whole having the form of a gridiron. The beans were thickly 
sown in the trenches. In the Evans and the Page wheat fields two 
plots in each were thus arranged, the one to be infected and the other 
to serve as a check. In the Kellenberger oat field one plot was 
planted and kept infected. In the Evans wheat field two plots of 
the same size and appearance as those planted to beans were laid 
out by means of strips of old straw 1 foot broad. One was infected 
and the other left as a check. In a neighboring field •small piles of 
straw and of fresh weeds were placed at intervals and kept infected. 
The end sought in these experiments was a method of supplying 
shade and moisture enough to encourage the development of the 
fungus. 
Fungus grown at the University of Kansas on a preparation of 
corn meal and potato extract was pulverized, mixed with dry dust 
or sand, and scattered in the bean rows and strips of straw. 
In the Page field the plots were planted just south of a hedge, 
along which were a good many bugs in the spring. The plots were 
about 60 rods apart. The west one was infected May 7 and May 14. 
As the bugs seemed to diminish in numbers along the hedge, no more 
fungus was placed in this field. At the last examination, June 11, a 
few living and a few fungus-covered bugs were found in both 
