28o MAINS AGRICULTURAL LXPE;RIME;N'T STATION. I914. 



Shade or ornamental trees can be protected frequently from 

 serious aphid attacks by keeping watch from year to year. 

 This is especially desirable while trees are young. 



From small or isolated trees the galls of gall forming species 

 can sometimes be collected by hand before the aphids leave 

 them, thus lessening the trouble in that vicinity for another 

 year. 



A general account of plant lice, containing a discussion of 

 their habits and of their natural enemies, together with direc- 

 tions for aphid control by remedial measures, is published by 

 this Station under the title of "Aphids" and can be secured free 

 of charge by any resident of Maine who desires it. 



