REPORT OF THE STATE ENTOMOLOGIST 1902 143 
lime, salt and sulfur proved fully as effective as the other insec- 
ticides under these unsatisfactory conditions. 
The results obtained with the lime, salt and sulfur mixture 
seem to indicate that, in order to be effective, the wash must not 
be exposed to drenching rains within three or four days after ap- 
plication. The exceedingly poor results following the application 
in the vicinity of Albany apparently show that this material is 
nearly worthless if the application be followed immediately by 
considerable rain. This instance certainly raises a strong doubt 
as to the value of this material when applied under such con- 
ditions. Should subsequent experiments prove this to be true, it 
will nearly disqualify this wash for use in our eastern climate, 
since such periods of immunity from rain can not be depended on 
in early spring, and the same is true to a lesser extent in the 
fall and during the winter. 
Summary 
Our experience during the past three years and that of many 
others with spring applications of crude petroleum emulsion has 
been so uniformly satisfactory that we are at loss to account for 
the poor results obtained by cthers. The many injuries to fruit 
trees and the dangerous nature of the material emphasize the 
necessity of caution and the grower, who would use crude 
petroleum is therefore advised to experiment on a small scale at 
first. The fall treatment came so near injuring the trees that 
we can not advise it. The application of this material in suc- 
cessive years has not caused the injury we feared but on the 
contrary the trees have grown rapidly and gained in vigor. 
The whale oil soap is a valuable insecticide, particularly when 
applied in the fall though in doing this there is danger of in- 
juring peach buds. A spring application, using only 114 lb to the 
gallon, if thorough, is a very effective check. 
Our experience with lime, salt and sulfur has not been entirely 
satisfactory put the many excellent reports from other experi- 
menters lead us to believe that possibly our results may have been 
exceptional and that this mixture may prove a most excellent ma- 
terial for controlling this scale insect, a point which can be 
determined only by further experimentation. Itis, however, very 
disagreeable to handle, being hard on operator and apparatus. 
