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PROF. FARLEY: I couldn't say as to the wind. We 

 were not doing it to test out the relative burning, and did 

 not take into account the direction of the wind, although, 

 as I remember it, they were both good days for spraying. 



QUESTION : Was the tank washed out between spray- 

 ings? 



PROF. FARLEY : Yes. 



MR. C. K. SMITH : I would like to ask if you have had 

 serious burning with the self-boiled and arsenate of lead or. 

 peaches? 



PROF. FARLEY : Yes we have had very serious burn- 

 ing with the self-boiled lime-sulfur and arsenate of lead, 

 but in each case we can trace it back to one barrel of the 

 mixture. That was one barrel that was allowed to boil so 

 long that too much soluble sulfur was formed. It burned 

 just as badly as the concentrated lime-sulfur. We have 

 occasionally noticed a section of several rows right through 

 an orchard in which the foliage was burned, the leaves badly 

 spotted and some falling off, while the rows on either side 

 were all right. The injury could be traced right down to 

 one tankful of spray material. 



.MR. C. K. SMITH: But you lielieve it never will occur 

 if it is properly mixed and slaked? 



PROF. FARLEY: We have never experienced any 

 trouble, because there is snch a large excess of lime. 



QUESTION: With ordinary, average lime, how many 

 minutes would you let it boil? 



PROF. FARLEY: From the time the boiling actually 

 started, I would say four or five minutes. I would rather 

 liave it too weak than too strong, for peaches, because a 

 relatively weak solution will control scab. It is hard to 

 specify a certain length of time, because it is hard to tell 

 Avhat you mean by an average lime, but we go more on the 

 appearance of the material than on the amount of boiling. 

 Just as soon as the actual action of the lime ceases we add 

 water. We do that before we get any of the concentrated 

 lime-sulfur color. When we get a red color we are afraid of 



