NINETEENTH ANNUAL MEETING. 



33 



a larger orchard than one of from four to five hundred 

 trees, of course, a different type of apparatus is desirable. 

 A power outfit, a gasoline power outfit, is probably the 

 best, all things considered. We have used the gas sprayer 

 with very good results in a small way, but there is one 

 objection to them : if we are going to use the lime and sul- 

 phur, the gas has a chemical effect on the lime and sul- 

 phur. Merely for the arsenate we have had very good 

 results with it. One thing we can do, and that is to spray 

 the way this man is spraying. That is an old picture tak- 

 en ten or fifteen years ago. It is too much like an irrigat- 

 ing process to suit modern conditions. In a small orchard 

 we have used another type of spraying apparatus. As an 

 experiment we have used a little tower mounted on a 

 wagon. That has some advantages, one of which is that 

 it enables a man to get right up on a level with the trees, 

 so that he can readily cover the foliage. Here is another 

 type of apparatus which is supported on two rods, with a. 

 special derrick built for it. This does not catch in the 

 limbs quite so bad as the high tower of the other type. 

 These two rods are usually made of bamboo. Now there- 

 is a point that you should remember. In buying bamboo. 

 see to it that the sections are so that they will not twist 

 ■off the first time you use them. Some of them are exceed- 

 ingly exasperating in that regard. 



Now I want to close by saying just a word about noz- 

 zles. We have the old Bordeaux type but that has largely 

 been displaced. We have over here on this slide a new 

 type which I propose to call the disc type of nozzle. I 

 think most of the pump companies are making this noz- 

 zle, and we may call them the disc type of nozzle. You 

 can recognize it from the picture. I have used this for the 

 last couple of years, and it seems to me very much supe- 

 rior. It will not work very well at a low pressure. You 

 want at least eighty to one hundred pounds, and you must 

 also have a long shank hose of good quality. I think more 



