138 TRANSACTIONS OF THE ILLINOIS 



Mr. Webster — I am satisfied that many reports of arsenical 

 poisoning have been misleading. Most of us use London Pur- 

 ple. We use one-half pound of the purple to one hundred and 

 twenty gallons of water. In regard to the strength of the purple, 

 we find that when it is fresh it is stronger. Those who have used 

 it when new, find one-fourth of a pound to eighty gallons of water 

 sufficient, and that is too strong for peaches. Poisons will an- 

 swer the purpose a great deal weaker than we first supposed. I 

 think as to burning the foliage, the clearness of the atmosphere 

 has much to do with it. Our best results have been on cloudy, 

 still days, and I believe that rightly applied two ounces of purple 

 to a barrel of water is plenty. 



Mr. Shank — I think also, much depends on how you put the 

 spray on. I think it only needs a kind of mist or smoke. I find 

 further, that a little pump called the "daisy" is the most pract- 

 icable. It only costs $2, and I can take that and a pailful of water 

 and spray a tree twenty-five years old to perfection, and you 

 don't have to haul so much water. I think that one-half pound 

 of London Purple is about right for two hundred gallons of 

 water. I do not think it is worth while to spray on the blossoms. 

 1 will say, for apples put it on when they are about the size of 

 peas. 



Mr. Cadwell — The first I sprayed was three years ago. I knew 

 nothing about it and thought I would try it. We used Paris 

 Green the first year, using one pound to one hundred gallons of 

 water and burned the foliage a little. We were pretty well satis- 

 fied with it. The canker-worm had got into the orchard and we 

 found it necessary to do something. We commenced to spray 

 about the time the blossoms began to fall, and having seventy- 

 five acres to spray, we were quite awhile at it, although some 

 days we sprayed as many as twenty acres. Prom the size of the 

 trees, some parts of the orchard required more of the solution 

 than other parts. We used as high as twelve hundred to fifteen 

 hundred gallons of water in a day. At the end of the season the 

 moth were scarce and the canker-worm had disappeared ; but the 

 canker-worm appeared the next season, except where we sprayed 

 first; in that locality we have not been bothered with it again. 

 The second season we used London Purple, as we had heard of 

 the danger in handling Paris Green. We bought the purple of 



