36 Contagious Diseases of the Chinch-bug. 
cases there was apparent injury done to crops, varying in 
amount from a very narrow strip along the edge of a field to 24 
acres. Where several fields immediately adjoined one field 
from which the bugs had migrated, they are counted as one 
ease. In 14 cases it was ascertained that Sporotrichum had 
been artificially introduced into the place examined in 1895; 
but in the great majority of cases where information:was ob- 
tained on this point, artificial infection had not been used in 
1895. However, there were very few localities visited where 
artificial infection had not been used at some time, either on 
the farms examined or in the neighborhood. 
Of the fields visited there were 35 in which bugs were found 
to be abundant, or in considerable numbers at least. In some 
cases two or three of these fields adjoined one another, but, in 
general, they represent different localities. Of these 35 fields, 
Sporotrichum was found in 34 cases—abundantly in 19 of the 
34. Empusa was found in 24 of the 35, and abundantly in 9. 
Artificial infection with Sporotrichum was used in 1895 in 7 of 
the cases in which information was obtained ; in the majority 
of cases infection had not been employed in 1895, so far as 
known. In 20 of the 35 fields there was a considerable injury 
to the crop. The crops were approximately as follows: 
Commmear wiheat-nela ii rary Sawn g ie Wien Oe ALG ae iad ae RL ARS Seo 13 fields. 
Conn near 7Ve-Telds fyi5- 3c) Ik as cE Ben ROU ore apa ee ee AO 
Gorn near Oat HELIS) As ey ONO TI A IN UAV UNE aN PLEAS Gs aN st 
Corn: nob near small rain. ane aoe ys Neel MCENROE SO pep Ov 
CO ais eRe en NI Pre Red ANNE Ne RAN PORE RCY a 2c ne ga ACE Dh oye 
AL a raat a GEN VRE BERN Uc IP RIAN DI: ARDS Waid fh aL hm Oe Se AACN Syst 
MVE iia iia ea UC Rai la wt Bh Ws eel te DS AM Uae oS LP the 
In 22 fields the soil was upland; in 10 river or creek bottom. 
In most of the fields the surface of the soil was moist, and in 
all, practically, the ground was moist just beneath the surface. 
The 35 fields in which living bugs were abundant gives per- 
haps a fairer notion of the distribution of Sporotrichum and 
Kmpusa than the whole number of cases in which bugs were 
present, because, where bugs were few, Sporotrichum, if pres- 
ent, was as a rule correspondingly scarce, and the chances of 
overlooking it in a field where there is very little of it are much 
greater than in fields where both living and diseased bugs are 
relatively abundant. The weather, as noted by myself, for the 
different days and the localities in which these observations 
were taken, are as follows: 
