- 85 
Insect 
Cankerworms 
Carpocapsa poinonella L. 
Ceratomia c atalpae Bdv. 
Cherry slug 
Chionaspis euonymi Corast. 
Chlorochroa sayi Stal 
Result 
Effective 
Highly toxic 
in laboratory 
tests 
Ineffective in 
the orchard 
Effective 
Dust ineffective 
Spray equal to 
lead arsenate 
Effective 
Less effective 
thpn derris 
Ch ry s o mph alu s aurantii Maskell Effective 
Clothes moths 
Coleophora laricella Hon. 
Corythuca arcuata Say 
Crioceris asparagi L. 
Crioceris duodecimpunctata L. 
Cucumber beetles 
Diabrotica ' trivittata Mann. 
Diabrotica vittata F. 
Reference 
Hamilton 185 
F. L. Campbell 60 
Childs 79; Haegele 182: 
U. S. Dept. Agr. 418 
Hamilton 185 
Colo. Agr. Expt. Sta. 
88 
do. 
Hamilton 135 
Cassidy and Barber 65 
Effective 
Cressman 97 
do. 
McTavish 279 
Boyd 39 
75$ effect 
,ive 
Hamilton 185 
Effective 
do. 
Recommended 
Huckett 206; Bourne 
and Boyd 36 
do. 
4 
Bourne and Boyd 36 
Effective 
Howard and Mason 201 
do. 
McXinney 278 
do. 
Walker 451; Wisconsin 
Agr. Expt. Sta. 472 
Effective 
equal to 
and 
derris 
Beard 24 
100$ effective 
Recommended 
Hamilton 185 
Bourne and Boyd 36 
