70 



EXPERLMEXT STATION, 



[Jan. 



out of center at will. The object of this center brass rod, c, is 

 to take the spray as it comes out of the %-inch nozzle under high 

 pressure and break it up into a fine mist, and Avith the pressure 

 which we used it is capable of throwing the mist 20 or 25 feet. 

 This is sufficient to reach, from a ladder, most of the foliage on 

 In case it is necessary to reach higher, the ad- 



a large elm tree 



9 d 



Ft'i. 1. — Showing a new type of spray nozzle adapted 

 to high-pressure work on large trees. A, essential 

 part of nozzle; B, ordinary attachment provided 

 with shut-off; C, nozzle enlarged without a guard; 

 t, small brass tip; e, guard; c, pointed brass rod to 

 break the spray; d, rod to support the same. 



justnient is thrown out of the center and the spray goes directly 

 through the i/y-inch aperture. By this means a greater dis- 

 tance and carrying power are secured, although not so fine a 

 spray. 



This type of nozzle has ])roved to be very successful, and Avas 

 used throughout the whole summer with the best results. 



