79 



like, Init there is nothing in our experience that will com- 

 pare with the gmi. The limit of height is nothing. We never 

 think of a tower. The man walks along and has an awfully 

 good time, and does a good job. 



I think that what I have said might be a little mislead- 

 ing if I did not supplement it by stating that the Friend 

 gun, — and as far as I know any other of the same system — 

 is not a real efficient tool unless you have sufficient power 

 back of it in your outfit. In other words, if you cannot main- 

 tain a pressure of from 250 to 300 pounds you will not get as 

 fine a division of your material with the gun as I think you 

 would get with the ordinary nozzle and the smaller opening. 



THE CHAIRMAN : That seems to point to the fact that 

 some investigation should be given the matter before pur- 

 chasing a certain kind of outfit for the kind of work you 

 have to do. 



Mr. Davenport, can you give us any more information 

 on the pear psylla, which is interesting, I know, to our Presi- 

 dent and one or two others here that have considerable trou- 

 ble with it? 



MR. DAVENPORT : Before I say anything on the pear 

 psylla, I might say that the Red Astrachan is also injured 

 very much by using Bordeaux mixture. There is one variety 

 of apple, however, which is benefited by it, and that is the 

 Roxbury Russet. Now, you might thiiik that a little peculiar, 

 but I know in one particular case they had a good deal of 

 trouble getting a russet color on the Roxbury Russet, and 

 Bordeaux was the solution. 



THE CHAIRMAN : Doe« that remedy go back on them? 



MR. DAVENPORT: No, it gives them, a good russet 

 color and absolutely keeps them free from scab. 



Now, in regard to the pear psylla. I do not know as you 

 would want to take up at this time very much about the pear 

 psylla, but I think if you look back over your trees or if you 

 think back over the condition of your pear trees, you will re- 

 member that last year and the year before you noticed a little 

 sooty fungus on the leaves and also on some of the pears late 



