we 
324 ReporrT oF THE DEPARTMENT OF ENTOMOLOGY OF THB 
TABLE V—Conlinued. 


Trees. Per- < 
aE . cent- Degree of . 
Kind. No. Age. age infestation. Results. Checks. 
Yrs. oil. ; . 
PEACH: 4 Old 20 Nearly dead with May 31. Trees Scales but 
scale. Inecrust- dead, and as a little affected 
ed on trunkand result, scales by winter. 
nearly all limbs. dead also. Larvae a- 
bundant dur- 
ing follow- 
ing season, 
PLUM: 
Lombard, 1 8 40 Badly infested. Scales dead. No Same. 
apparent injury 
to tree. 
SWEET 
CHERRY: 112 40 Incrusted on May 31. Scales Same. 
trunk and low- dead. Tree un- 
er limbs. injured. 
Series II.—The trees were sprayed November 21 and March 17. 
Weather bright on latter date, temperature 20. Weather during 
following week bright. Average temperature 29. 
TABLE VI.—PERCENTAGE OF KEROSENE REQUIRED TO KILL HIBERNATING 
San Jose ScALE: SERtEs II, 

Trees. Per- < Ae 
Kind. No. ieee Se saben: om Results. Checks. 
Vee, oul. 
PLUM: 
Reine ; 
Claude 1 8 40 Badly infested. June 29. Scales Scales not 
Inerusted on dead. much affect- 
lower limbs ed by win- 
and trunk. ter. ‘Larvee 
abundant. 
Reine 
+ 20 Badly infested. June 29.- Scales Scales not af- 
Claude ‘1 8 15 not affected. fected by 
winter. Lar- 
ve abub 
dant, 
SWEET 
CHERRY! 
1 * 100 Moderately in- June 29. Scales 
fested. dead. “Paves 
somewhat in- 
jured. 
Summary.—These experiments included 58 pear, plum, peach 
and sweet cherry trees. All of them were sufficiently infested 
sinew 
as 
sake fe with 20 per ct. in late November; with 15 per ct. in early Decemben 
ng. 

*Bea 
