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foliage, and will, I trust, be found, by more thorough experiment, 
efficient as an insecticide when used of a strength that will preclude 
injury to foliage. 
Late in the summer a preparation of petroleum sludge with soap 
was sent me from the New York Chemical Works for trial, but there 
were very few insects at that time on which to test it, while its almost 
intolerable and persistent odor is really a serious objection to its use, 
especially in small gardens. 
In making my experiments, I have used the Lewis Combination 
Force Pump and Syringe, and consider them well adapted for use in 
small orchards and vineyards, and especially adapted for purposes of 
experimentation, where the larger and heavier appliances are not 
necessary, 
