BULLETIN 371 



trees or for use in small plantings of nursery stock. For dusting on a 

 more extensive scale a power machine, such as is illustrated in figures 



HOTOGRAPH BY F. M. BLODGETT 



FlG. 91. A TRACTION DUSTING MACHINE 



This duster is suitable for treating nursery stock 



89 and 90, is preferable. The outfit shown has been used successfully for 

 dusting orchard trees. The machine is operated by a gasoline engine, 

 and the cloud of dust mixture, which is discharged from the long pipe, 



PHOTOGRAPH BY F. M. BLODGETT 



FlG. 92. TRACTION DUSTING MACHINE IN OPERATION 



floats through the trees and completely covers all the foliage. The 

 machine is suitable also for dusting shade or park trees. 



