April, '11] SPRAYING SYMPOSIUM: DISCUSSION 201 



$3,000. I happen to know that he never stops to spray a tree, but 

 goes straight along. He has the men on platforms on the side of the 

 wagon, and the wagon starts right off down between the rows, throw- 

 ing the spray in a perfect cloud as it goes. As soon as the tank is 

 empty, the next wagon comes up with its full tank, and connections 

 are immediately made. The Hquid is agitated by dehvering com- 

 pressed air at the bottom of the tank, and a precipitate is never found 

 in the emptied tanks. 



Secretary Burgess: The power sprayers on the market are 

 assembled, that is, they are not built by one firm, and as a rule, the 

 pumps are made for other purposes than spraying. The engines are 

 also built for other purposes. Most of them are heavy stationary 

 engines, which are simply hooked up with some pump. It seems to 

 me that what is really needed is a spraying machine that is built for 

 the purpose of spraying, rather than spraying machines that are built 

 by assembling various parts^pumps, engines, etc.- — which have been 

 designed for other purposes. Professor Symons mentioned the idea 

 of spraying from a tower. I believe the time is coming when we will 

 give the fruit grower an equipment so that he can spray_ from no 

 higher point than the top of the tank, or from the ground. I believe 

 the system of solid stream spraying, properly adapted — it must be 

 worked out and experimented with — can be used in any orchard, and 

 the operator can spray from the ground. 



Mr. Symons: Those who spray for truck crops say that the Hillman 

 sprayer has been found very satisfactory. It has a double acting 

 pump which can be used for spraying trees if desired. There are 

 several other satisfactory ones on the market. 



President Sanderson: I think it is very evident that we could 

 spend more time on this subject. No one has mentioned the use 

 of the gasoline engine with compressed air. It is very evident to all 

 of us that what Mr. Burgess has said about the attitude of pump 

 companies is very true. The insecticide companies have gone away 

 in advance of the pump companies. I would like to suggest that 

 when this symposium is published, it might be a good idea to send a 

 marked copy to each of the pump companies. The next paper will 

 be read by Mr. Webster. 



