




Flies Flies dead in 
___Material Cages used 7e_ hours... 144 hours 
Number Nusiber _ Percent Porcent 
Lead arsenate 
4 to lov 4 3 1Gu 4.0 10.0 
Lead arsenate 
8 to 100 4 8 290 aS) ; 2060" 
Nicotine sul- 
phate 
__i to 200 5 4 wioeat AUS us 14.0 25.0 
Nicotine sul- = y 
phate 
1 to i100 had te 200 mEOTS 31.5 

Tartar emetic cal ) 
peed LOU A taney 1606. A agg ibe 
Tartar emetic 
2 to 100 ¢ g 200. 75.0 wT 000u 
Check, no . 
poison 2 200 Deo Fey te, 

& Used with cane molasses, 5 gallons per 100 gallons, and cane sugar, 
20 pounds per 1lu0 gallons of spray. | 
b Forty percent solution used with cane molasses, 10 gallons per 100 
gallons of spray. ee 3 | 
© Used with cane molasses, 5 gallons per luu gallons of spray. 
JAPANESE AND ASIATIC BEETLES 
Fluctuation in grub populations of the Jan beetle.~--Changes in 
soll population frequencies since the current orood of larvae of 
Popillia japonica Newm. reached its greatest abundance in September 
1935, as reported by H. Fox, Mocrestowm, N. J., are shown in the fol- 
lowing table, which summarizes records on seasonal surveys. 

