189 
md the adults were beginning to show signs of weakness. No 
3 hange was noted August 8, but August 9 two of the adults 
seemed very weak, and all were dead August 10. 
No. 3. This experiment was begun August 4, and was like No. 
I except that damp earth was placed in the vials. August 5, 6, 
I, and 8 the bugs all seemed in good condition. August 9 one 
3ug in lot two and one in lot three had molted, no change being 
evident in any of the others until August 11, w T hen two of the 
nsects in lot five and one in lot four gave evidence of weakness, 
md one in the latter lot had molted. August 12 all in the fourth and 
ifth lots were very sluggish, but no change was noted in the others 
)xcept that one more of the third lot had molted. August 33 all 
hose in lots four and five were dead, but those remaining were 
n good condition. August 14 to 16 no change. August 17 one 
nore bug in lot three had molted, and the insects in the remain- 
ng lots were in fair condition, the adults especially seeming to 
)e perfectly healthy. August 18 one of the bugs in lot three 
ieemed very weak and sluggish, but the others were not notice- 
ibly so. August 19, no special change apparent except that the 
iluggishness was very marked in lot three, all being dead August 
10. The others seemed in good condition at this time. August 
II, one in lot two had pupated; August 22 and 23, no change 
]oted; August 24 and 25, two of the pupae were noticeably slug¬ 
gish, all dying on the 26tli. At this date the adult that emerged 
rom this lot was still alive but sluggish. August 27 the adult 
n lot two was found dead, but those in lot one were in good 
condition, remaining so until September 12, at which time the 
irst one was seen to be inactive. One died September 13 and 
he others were all dead the 15tli. 
Respectfully submitted, 
W. G. Johnson, 
Assistant Entomologist. 
