136 Bulletin 233. 



sawflies had emerged and laid their eggs, which they were thus forced 

 to do in the leaves of the few non-fruiting trees. Had many of the worst 

 infested branches on the larger trees and the smaller crowded and stunted 

 trees been removed early in June, and their hordes of sawfly larvae left 

 to dry up and die in the leaves, the infestation could have been still 

 further checked, but it was delayed and finally never done. Whenever 

 practicable and advisable, this pruning of infested branches early in 

 June should be done, as it will materially aid in controlling the pest. As 

 a result of the earth-mulch or earth-smothering treatment and the delay 

 in appearance of the foliage due to the fruiting of several of the trees, 

 the infestation in 1905 was concentrated on fewer trees and was not so 

 severe as during the previous year. 



