33 



how much to buy and how much they would have left, and 

 we made an estimate and on the average we find they will 

 need one barrel of lime-sulfur solution per acre of thirty 

 trees or thereabouts. Half of that will be used for the dor- 

 mant spray and the other half for the summer. I thought 

 I could give you the exact figures, but I can't. It will be in 

 my paper, at any rate. 



MR. WILSON. One more question, Doctor, that you 

 have left us in the dark about. You have told us there are 

 practically only two nozzles, or three, on the market that 

 are really good. How are we going to find out what those 

 are, the names of them? On the quiet, or how? 



DR. WHETZEL. Well, sir, if I had not forgotten you 

 could find out. I am not afraid to tell. 



MR, WILSON. I will leare my address with you. 

 DR. WHETZEL. Don't do that, because I might lose 

 it. But if you will write to me or to Professor H. W. Riley 

 of the Farm Machinery Department and ask him,. I think 

 he will send you the names of certain nozzles that were es- 

 pecially good. If I remember right, among the good noz- 

 zles were the Friend, the Gould Mystery, and one of the 

 Bean nozzles, and the Scientific. 



A VOICE. But wasn't that at 175 pounds? 

 DR WHETZEL. Yes, those are all large volume and 

 must be from 175 to 200, or they won't do the business. 

 If you must have low pressure, use the Vermorel type. 



Now, don't imagine that the more nozzles you get on 

 the end of the pole the more business you are doing. That 

 is another kind of poor eyesight. The rule we follow is 

 this : Never more than one nozzle on the pole on the ground. 

 One nozzle on the pole on the ground is all that is necessarj'', 

 because actually the man on the ground does a very small 

 part of the actual spraying. The man on the tower is 

 the man who does the business. On the pole on the tower 

 for dormant spraying, only one nozzle, because I have never 

 seen a man who could work two nozzles and make them do 

 business effectively because he is spraying a limb at a time 



