APPARATUS 39 



nozzle and hose to a long pole, but a better way is to 

 use a half -inch gas pipe or a brass tube, 12 or 14 feet 

 long, attaching the hose at one end and the nozzle 

 at the other, or one of the bamboo extensions man- 

 ufactured by some spraying firms. One can also get 

 a handy arrangement for underspraying low bushes, 

 one form of which is shown in the illustration 

 below. 



Agitators for Spraying Mixtures With most 

 poisons held in suspension in water some form of 

 agitator is needed to keep the material from settling 

 to the bottom. "The agitators now in use," writes Mr 

 A. V. Stubenrauch, "are far from perfect or satis- 



Underspraying Attachment 



factory, especially upon long flat tanks ; and unless 

 they are continually watched unequal dissemination 

 is likely to result. It is not to be forgotten that the 

 liquid must be kept in motion throughout the tank. 

 It is not alone necessary that a current be created 

 near or around the opening into the pump. For this 

 reason the whirling paddle is perhaps the best, espe- 

 cially if constructed with tilted blades, something like 

 a screw propeller. It is a common practice nowadays 

 to attach a paddle to the pump handle, so that the 

 agitation may be maintained with every stroke of the 

 operator. At first sight this seems to be a good plan, 

 but it is, really, a mistake. If the paddle is a satis- 

 factory one, the labor to keep it going will be far too 

 great when added to that of pumping, and, in conse- 

 quence, the one will interfere with the other. Besides, 



