STATE POMOLOGICAL SOCIETY. 105 



results of his work in this direction, and I can do no better than to 

 record his conclusions. 



"To determine if there is not a more effectual and satisfactory 

 remedy than that of cutting off and burning the warts (which is in 

 part effectual) the following liquids were applied : 



1. Linseed oil. 



2. Turpentine. 



3. Kerosene. 



These remedies were applied with a small brush as soon as the 

 warts began to appear. As they do not all come out at once, exam- 

 ination and application of the remedies were made three times 

 ■during the summer, all warts being painted over each time. 



RESULTS. 



In three examinations made with the microscope during the fall 

 and winter, no spores (ascospores) were found in the warts. In fact 

 none of the sacks (peiithecia) were developed enough to produce 

 them before the warts were destroyed by the remedies. In some 

 cases where the kerosene and turpentine were applied in so large 

 quantity as to spread around the branch or to run down it, the 

 branches were killed. No such injury occurred where the linseed 

 oil was used. 



CONCLUSIONS. 



1. Linseed oil, turpentine and kerosene all effectuall}- destroyed 

 the plum wart. 



2. Turpentine and kerosene must be used with great care. 



3. Examinations should be made at least three times during the 

 summer, from June 1st to August 30th. 



4. Enough of the liquids must be applied to saturate the wart. 



5. As the plum wart is readily propagated on the wild choke 

 cherry all such trees should he destroyed, and all of the warts upon 

 the trees of the garden (morello) cherr}' should receive the same 

 treatment as those on the plum trees. 



SUGGESTION. 



While the above remedies have proved effectual it is suggested 

 that possibly a more harmless remedy may be found in the use of 

 sulphate of copper, although no experiments have been made with 

 it to our knowledge. Applied with the hand pump in the spring, 



