132 THE CONNECTICUT POMOLOGICAL SOCIETY. 



pable State Entomologist, who has been working along very 

 similar lines, and what I shall say will be very largely in con- 

 firmation of his work, and we must remember that in the long 

 run it is the confirmation and making certain of the work of 

 each other which enables us to come out from under the cloud 

 of doubt into the clear sunlight of conviction. 



Experience in Controlling the San Jose Scale in 

 New York State. 



By Dr. E. P. Felt, Albany. N. Y. 



Just about ten years ago, two bulletins upon the San Jose 

 scale were published by New York State. One emanated 

 from the Agricultural Experiment Station at Geneva, the 

 other from the office of the State Entomologist. Both were 

 largely compiled and are of interest mainly because of the 

 light they throw upon the situation at that time. These pub- 

 lications supplied a demand for information arising from the 

 scale having become well established in several localities. It 

 is interesting to note that both authors advocate the employ- 

 ment of a whale oil soap solution. 2 lbs. to the gallon, as the 

 only method, aside from fumigation, of satisfactorily control- 

 ling this pest in the East. It is true other insecticides were 

 discussed, but the unsuccessful results obtained in Maryland 

 the year before, by the then Division of Entomology, U. S. 

 Department of Agriculture, raised serious doubts as to the 

 value of lime-sulphur salt washes in this section of the coun- 

 try. An infestation at Cornell University was discovered, and 

 in 1897 some experiments with whale oil soap and kerosene 

 emulsion were conducted by Mr. H. P. Gould. These resulted 

 in confirming the value of a whale oil soap solution, 2 lbs. to 

 a gallon, and as a summer application a 25 per. cent, kerosene 

 emulsion was found to be very effective. These experiments 

 were continued along similar lines the following year. 



The results with crude petroleum, obtained by Dr. Smith 

 in 1899, were published that fall and in 1900 the speaker 

 began a series of experiments in a favorably located orchard 

 near Albany, the materials employed being kerosene and crude 

 petroleum, both pure and variously diluted, and whale oil soap 



