Fifth Annual Report. 9 
ing this date there was very little precipitation until the 9th, 
10th and 11th of June. On these three dates there was almost 
a continuous shower amounting to 2.71 inches. Other rains 
followed on the 12th, 14th, 17th, and 18th, adding 2.21 inches 
to the rainfall. The average relative humidity for the first 
eight days of June was 58.8, while the succeeding eight days 
had an average relative humidity of 77.7. This increased | 
humidity and precipitation was followed by an epidemic of 
Sporotrichum, and fungus-covered bugs were found in abun- 
dance in this locality in all fields visited. 
The rainfall and average relative humidity for the spring and 
Relative 
Rainfall. humidity. 
14S OLAS oe Ct Ueno a | I etc 1.47 56.90 
JSTOR TORU hs sia Uo COMER A OES eae eR) LAVAS ck Ib te cet MAG a Le 0.74 57.06 
UME erates 2 tek Teter, Mae eae BUac tan ality tN oo) 3.65 60.04 
DIPS SEO OS USI cen Mr A) A UG 1S el as ata ae ull He REN 5.93 68.20 
“LRA cic tie BS nee a en Ue desta GR It oo TR CUBAN Ue Le 10.06 77.70 
JAAUROM TIS Fy SNR Re a eg a ee ee EA DRI NET OL CY SL NL oe ea ay 12.30 79:40 
It is seen that the rainfall and humidity increased from month 
to month. Sporotrichum continued throughout the summer, 
with brief intermissions. 
3.—EPIDEMIC OF SPOROTRICHUM AND EMPUSA. 
On the 17th of June Mr. Barber found in Coffey county chinch- 
bugs which had been killed by Empusa, and on the 6th of July 
Mr. Marcy found chinch-bugs dead with Empusa in large num- 
bers in corn- and millet-fields in Douglas county, and at times 
during the summer Empusa was even more destructive of the 
bugs than Sporotrichum. This was particularly the case later 
in the summer when the ground was kept wet by continuous 
heavy rains. 
We have never before witnessed such a wide-spread epidemic 
of Sporotrichum and Empusa as occurred this season, but the 
necessary amount of humidity came too late in many localities 
to start the fungus diseases extensively in time to help the 
young corn at that critical time when the bugs were invading 
it from the small-grain fields. The diseases must have been 
naturally epidemic when they appeared extensively later, be- 
cause we could see no difference between the fields inoculated 
artificially and those not inoculated, and bugs received from 
