New YorkK AGRICULTURAL EXPERIMENT STATION. 261 
ORCHARD IV: PEACH, PEAR AND APPLE TREES. 
This small orchard consists of ten peach, pear and apple trees 
just coming into bearing. The orchard has evidently received 
fairly good care, and until two or three years ago the trees were 
thrifty. Recently most of them have shown signs of weakness, 
probably due in part to the San José scale. 
The treatment and results are summarized in Table X. 
Time of tests in Table X.—Winter treatment. Trees sprayed 
Dec. 20 to 24. 
TABLE X.—WINTER SPRAYING IN ORCHARD LY, 

Trees. Strength 
5 5 a Bee $$ —_ of 
Number petro- 
Kind. treated. Degree of infestation. Jeum, Results. 
Per ct. 
PEACH: : 
Var. unknown. 2 Slightly infested...... 25 Scales not affected. 
Trees slightly in- 
jured. 
Var. unknown. 1 Slightly infested...... 40 Scales dead. Tree 
seriously injured. 
PEAR: 
Var. unknown. 2 Slightly infested...... 40 Scales dead. Tree 
uninjured. 
APPLE: i! 
Var. uuknown. § WHxtensively infested.. 40 Scales dead, 2 trees 
seriously injured, 
remainder unin- 
jured. 
SUMMARY FOR ORCHARD IV. 
In these experiments also, the 25 per ct. emulsion did not 
kill the scales while the 40 per ct. was effectual. The peach 
trees, although no more seriously infested than the pears, were 
slightly injured by the 25 per ct., and seriously injured by the 
40 per ct. emulsion. Two of the apple trees were injured by 
the 40 per ct. emulsion but not seriously. 
ORCHARD V: PLUM TREES. 
This orchard consists of twenty plum trees which have 
recently come into full bearing. All of them are extensively 
infested and somewhat weakened by the San José scale. As 
shown in the following table half were sprayed in the spring 
