324 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
The general results of the comparative tests of arsenite of 
soda and arsenate of lead are as follows: 


Wormy APPLES. 

ORCHARD. Trees Trees used 
sprayed. | in count. | Arsenite | Arsenat 
of soda. of lead. Check. 
No. No. Per ct. Per ct. Per ct. 
Dork OFKUWi ss oe hes ee. 276 21 6.4 heal : 
STOR OV. DAL) Rae kde eek.) 400 38 Diet 11 DF) es eee ee 
P-rAPEMO VATE oc Sed. debe 42 34 720 11-3 BY ey f 
BS OUD PALOWR oi. Lik. viay ee 75 40 15 0.5 10.0 
AVOPARG eo he on oe ee Che dette eee eee 9.0 8.6 20.7 

The average percentage of wormy apples for the four experi- 
ments from the trees treated with arsenite of soda is 9.0 and 
from the trees treated with arsenate of lead, 8.6, showing a gain 
in sound fruit by the arsenate of lead of .4 per ct. In com- 
parison with the checks there was a reduction of 11.7 per ct. 
wormy fruit by the arsenite of soda and 12.1 per ct. by the 
arsenate of lead. 
ACKNOWLEDGMENTS. 
Acknowledgments are due to Mr. Harold E. Hodgkiss, Assist- 
ant Entomologist, who directed the field operations; and to Mr. 
EK. E. Robinson, Centerville; Mr. C. W. Ward, Queens; Messrs. 
White and Rice, Yorktown; Mr. Frank Stevens, Mr. C. K. Scoon, 
Mr. John Maney, T. C. Maxwell & Bros., Mr. H. H. Loomis and 
Rice Bros., Geneva; Mr. Geo. Callard, Carlton Station; Mr. F. G. 
Whitney, Mr. W. H. Woolworth and Mr. Will Hall, Youngstown, 
who permitted the use of a portion of their orchards and assisted 
in various ways to further the experiments. 
