87 
1891. 
;now, F. H.— Chinch Bugs. Experiments in 1890 for their Destruction 
in the Field by the Artificial Introduction of Contagious Diseases. 
(Seventh Biennial Report Kansas State Board Agric., 1889-90, pp. 
184-188.) 
This article, apparently read originally as an evening lecture, opens 
rith a brief account of the writer’s experimental work of 1889, described 
nore fully above. (See under 1889.) Author believes that he successfully 
ntroduced a chinch-bug disease into states of Missouri, Nebraska, Indiana, 
)hio, and Minnesota, and into various counties of the State of Kansas, 
jaboratory experiments made the following winter showed that fungi of 
,he disease could be kept alive from season to season, but Snow believes 
,hat these fungi are destroyed by the winter in the open field. Field ex- 
)eriments of 1890 distributed over eighteen counties of Kansas. Thirty- 
sight packages of infected chinch bugs were sent out in 1890 to farmers 
>f eighteen counties in Kansas. Twenty-six reports were received,—a 
arge majority entirely favorable, including all made during June, July, 
tnd August. Among others, “Mr. Mattox of Chautauqua county received 
i package containing only six bugs, yet followed my directions, and within 
welve days the bugs on his entire farm were practically annihilated. I 
dsited the farm myself in order to verify the statement.” Correspond¬ 
ence from farmers published, and the general statement made that 
ieventy-three per cent, of all the field experiments of the season were 
iuccessful. 
A second disease, not entomophthorous, somewhat indefinitely charac¬ 
terized. The bacterial affection reported to have been most destructive in 
l 890. and the entomophthorous in 1889,—the latter season having been wet 
tnd the former dry. “There are thus two different classes of diseases, one 
)f which is adapted to a moist season, while the other appears to be 
idapted to a dry season; so, whatever the climatic conditions may be, we 
nay hope to be able to cope with these insect pests by means of these 
liseases.” 
