FIFTEENTH ANNUAL MEETING. 67 



to give another sj^rayiiig. The spray costs about three cents 

 a gallon, and cnn- yoin^ pear tree took about a gallon and 

 a half the first time, and a gallon the next time ; that is about 

 ten cents for spraying one tree. Now in the third spraying 

 in the spring, if 90 per cent, were killed with the first two, 

 I hope to get the next two or three per cent, so that there 

 won't be over one per cent, go into the summer. 



Now a few comparisons with the lime and suljjhur wash. 

 The lime and sulphur si)ray is recognized as the most effec- 

 tive and cheapest spray we have for the San Jose scale. All 

 experiment stations have come to that conclusion ; it is the 

 cheapest and most effective, and it costs from one to two 

 or three cents per gallon. It is very effective. ' There is no 

 question about that — 90 or 95 per cent, killed with one ap- 

 plication of the lime and sulphur wash. It is safe to use ; 

 you can use it on peach trees with practically no injury what- 

 ever. It has lasting effects. I remember some results by Prof. 

 Felt ; he put on the spray and thought it didn't kill many 

 scale, but a few weeks later he found the scale still dying. 

 When they began to hatch in the spring, they found the lime 

 and sulphur on the bark, and they didn't grow. One of the 

 best things about it is you can see where you put it — it is visi- 

 ble. 



I think we can do a great deal by pruning the trees be- 

 fore spraying them. The next thing is to get good spraying 

 apparatus. Mr. Derby has given you some points on good 

 spraying apparatus. The cjuestion came up here about com- 

 pressed air. Over in our state we are using compressed air 

 in the extreme western portion of the state. Just over the 

 line in Pennsylvania there is a man making compressed air 

 sprayers. They work beautifully. The only trouble is the 

 expense of the outfit. To use compressed air you have to 

 have an engine and a compressor, and the whole outfit costs 

 four or five hundred dolars to start in with. Then you have 

 to have several machines. This man has two tanks filled with 

 compressed air, and when one of these is being filled up the 

 other is out in the orchard spraying. The considerable ex- 

 pense of the first outfit debars many from using it. Another 

 word right here about I'aris green. One man here said he 



