43 



E. P. Garrettson. Is the liquid you use for spraying hard on 

 the tank? 



Answer. Xo, 1 expected it would be but it has now been in 

 use four vears and the tanks are all right. They are made of 

 galvanized steel. 



E. P. Garrettson. Is not sulphate of copper hard on steel? 



Mr. Lupton. I have used almost every thing — Bordeaux lime 

 sulphur and arsenate of lead but the meanest thing I have to use 

 is arsenate of lead and lime-sulphur. 



E. P. Garrettson. Is lOO pounds sufficient? 



Mr. Lupton. I think so. IMaybe I did do a little better 

 with a higher pressure, but I remember when we had the old- 

 fashioned hand-pump and thought we were doing pretty well with 

 probably not over forty pounds, and now we think we are not doing 

 good work unless we are gomg a little higher than lOO. One hun- 

 dred is the best we can do with compressed air. That is the limit 

 of the pressure. 



E. P. Garrettson. Is it dangerous on that account? 



Mr. Lupton. I have thought about that and talked about it to 

 people that ought to know, and hardly think it is. 



E. P. Garrettson. The trouble is we cannot see inside the 

 tank to know how much it is rusting. 



J. W. Prickett. A\'hat sized pipe do you use in your well ? 



Mr. Lupton. A i ;4 inch pipe. If you have proper conditions 

 in a dug well it will answer the same purpose. I have had consid- 

 erable trouble m gettiiig water out of a deep well with an ordinary 

 pump. 



Mr. Cohill. Has your compressed air been entirely satisfac- 

 tory ? 



Mr. Lupton. There is only one objection that I can see and 

 that is the agitation. ]\Iy friends at A\'ashington asked me to send 

 a sample from the tank when I first began to spray and another 

 when it was nearly out, and they say there was no dift'erence. The 

 first two or three trees that are sprayed show an excess of lime. 

 I called attention to this and they say there would naturally be an 

 excess of lime which would come out first from the bottom of the 

 tank and would do no harm. 



J. W. Prickett. Do you think that comes from the Xozzle 

 being clogged? 



Mr. Lupton. Xo, when }'0u first begin to spray you spray 

 from the bottom. I try not to leave any licjuid in the tank over 

 night, so as to start fresh each morning. 



E. P. Garrettson. Do you use Lime-Sulphur for scale? 



Mr. Lupton. Yes. I bought an orchard a year ago very 

 badly infested with scale and used oil on it twice and lime-sulphur 

 twice. L'sed oil in the fall and lime-sulphur in the spring, and after 

 two applications I got an expert to come up from AA'ashington and 

 ascertain whether he thought best to use another application of oil. 

 He thought I had better try the oil one more time. The second 

 year I used oil in the fall and lime-sulphur in the spring as before 



