Fifth Annual Report. 31 
Bugs moving into the corn in great numbers. The corn-field 
was now marked off into four plots. Plot 1 was not inocu- 
lated artificially, and served as a check. Plot 2 was sprayed 
with Sporotrichum spores from artificial cultures. Plot 3 was 
infected by scattering bugs covered with Sporotrichum from the 
infection-boxes. Plot 4 was sprayed with sprouted spores of 
Sporotrichum from artificial cultures. At this date the wheat 
had been cut, and the bugs had advanced in the corn all the 
way from 36 rows in plot 1 to about 40 rows in plot 4. Infec- 
tion was now distributed as above indicated in rows 4, 6, 15 
and 20 in all the plots. . 
June 8. Sprayed in No. 2 rows 8, 16,24. Sprayed sprouted 
spores in No. 4 in rows 8, 16, 24. Scattered Sporotrichum 
bugs in rows 16 and 24 in No. 3. Bugs are advancing. Soil 
quite dry. 
June 9. At 3 o’clock began to rain. 
June 10. Rained all night. About three inches of rain fell. 
June 11. Rain did not seem to diminish the bugs. Could 
find a little Sporotrichum in all parts of the field. 
June 12. Field very moist; muddy in places. Bugs on the 
stalks very thick; could find Sporotrichum around all stalks in 
plots 1, 2, 3, and 4, as far as the bugs had advanced. A few 
full-fledged bugs found. Sprayed in rows 30, 32, 34, and 36, 
in plot2. Scattered Sporotrichum in No. 3, in rows 25 and 30. 
Sprayed sprouted spores in No. 4, in rows 30, 52, 54, and 36. 
June 13. A light shower last night; ground very moist and 
warm. Sporotrichum quite abundant, but the bugs are still 
doing great damage. More of the mature bugs noticed. Bugs 
moulting. 
June 14. Sporotrichum abundant. Moist and warm. 
June 15. Rainedlast night. Very warm. bugs still moult- 
ing, but not in large bunches as has been noticed in other fields. 
June 17. Showers yesterday. Warm. Many Sporotrichum 
bugs, but ae many still alive; the ground around each stalk 
in rows 2, 3,4, etc., is thickly spotted with Sporotrichum bugs. 
June 18. Very ee rain last night, washed most of the 
Sporotrichum bugs away; could only find them around the 
roots of the corn. At first sight, one would think that the live 
bugs had been washed away by the rains, but a closer examina- 
tion showed that they were hanging to the leaves of the corn, 
