New YorK AGRICULTURAL EXPERIMENT STATION. 325 
to give definite results. It will be noticed that although 49 out 
of 58 trees were sprayed with 20 per ct. kerosene the scales were 
not killed in any instance except one, and that was on four peach 
trees that were killed by the oil and the scales died with them. 
In every case where 40 per ct. and higher percentages were used 
the scales were killed. 
SPRAYING EXPERIMENTS TO DETERMINE THE EFFECTS OF SUMMER 
APPLICATIONS OF KEROSENE OIL UPON HEALTHY BEARING CANES 
AND BUSHES. 
In these experiments two grades of kerosene oil, 100° and 150° 
fire test, were used, as follows: 
Series Ia.—In this test 100° fire test oil was used on healthy, 
bearing gooseberry and currant bushes and pear and apple trees. 
Two applications were made, the first on April 27 and the 
second on May 5. On the former date the weather was bright 
with slight wind. Temperature 62°. The average temperature 
during the week following was 64°. On the latter date the 
weather was hazy, partially cloudy, slight wind, temperature 56. 
Average temperature during the week following 61°. 
Taste VII.—BEARING BusHES SPRAYED WITH 100° Fire-Trest KEROSENE. 

Per- 
Bushes. 
= ee ee Results. Checks. 
ind. 0. 
oil. 
GOOSE- 
BERRIES; 
27 varieties, 27 25 Burning of foliage varied from Two to 5 
one-fifth to three-fourths, in- bushes. of 
jured leaves dropped early, each variety. 
thus weakening bushes; latter Nearly all 
wintered poorly; about half died wintered 
next spring. — well. 
- CURRANTS! 
nae nq § 15 Foliage slightly burned inallcases; Four bushes 
5 varieties, “10 d 25 bushes uninjured. of each vari- 
: ety. 

1Two bushels of each variety sprayed; 15 per ct. oil first application, 25 per ct. second. 
