SOLID-STREAM SPRAYING IN NEW ENGLAND. 15 



efforts to spraying. If the infestation is severe and egg clusters are 

 very numerous they should be treated with creosote prior to spraying. 

 What is termed " rough creosoting " consists of treating the egg 

 clusters, which can be easily reached in areas to be sprayed. In 

 rare cases infested shade trees are located near buildings where 

 it is impossible to spray without defacing the buildings to some 

 extent. This can be avoided, however, if buildings are first wet with 

 clear water. If the infestations are located in pasture lands, propel 

 precaution should be exercised so that live stock will not be poisoned. 

 Poison notices should be placed in conspicuous places in all locations 

 where spraying is done. 



From 800 to 1,000 tons of arsenate of lead and about 500 high- 

 power solid-stream machines are being used each year in the New 

 England States in fighting the gipsy moth. Thousands of acres 

 of park and orchard trees and woodland in addition to approxi- 

 mately 20,000 miles of street trees are being sprayed. "When spray- 

 ing is properly done to control the gipsy moth, very little trouble 

 is experienced with other leaf -eating insects. 



