30 Contagious Diseases of the Chinch-bug. 
May 5. Another rain. 
May 6. No Sporotrichum bugs found ; soil moist. 
May 9. Found a few Sporotrichum bugs in A and B, but it 
was only after diligent search. The ground was quite dry. It 
dried up fast, owing to the excessive heat which we had had 
for a few days. 
May.11. More Sporotrichum bugs in the field. 
May 13. Field very dry. 
May 15. On the night of the 14th a half inch of rain fell. 
May 16. Slight showers of rain last night; misty to-day. 
Vast numbers of little red bugs (larvee) found in field. Sporo- 
trichum a little more abundant, but not at all plentiful. 
Sprayed in a small patch in A, and scattered Sporotrichum 
bugs in a small patch in B. Bugs were taken from the field 
and put into a flower-pot, which was kept in good condition for 
the growth of Sporotrichum. 
May 20. Visited both fields after the rain of the 19th and the 
morning rain of the 20th. Found only a few Sporotrichum 
bugs. The ground was moist and warm. Bugs taken from 
field and transferred to pot in the laboratory on May 16 are 
dying of Sporotrichum. 
May 23. Sprayed field A in a little ravine where the wheat 
was large and the bugs thick. Used two jars of the artificial 
culture ; also scattered Sporotrichum bugs in field B. Only a 
few Sporotrichum bugs could be found. Temperature cool. In 
the patches that were infected May 16 can see no results. 
May 25. Sprayed in asmall plot in field A with spouted 
Sporotrichum from artificial cultures. Only a very few Sporo- 
trichum bugs could be found. Bugs in pot taken from field May 
16 dead and covered with Sporotrichum. 
May 28. ‘To-day and yesterday a drying hot wind prevailed. 
(Temperature 90°; wind from the south.) 
May 29. Very hot and dry. There seems to be no evidence 
that Sporotrichum is spreading. 
May 30. Heavy rain last night, and to-day it is misting. 
June 1. A few Sporotrichum bugs could be found. 
June 5. A large majority of the old bugs can be found coy- 
ered with Sporotrichum in the field B, in the southwest part, 
where the soil is heavy and the wheat large. A few of the 
little larvee could be found covered over with the fungus. 
