153 



PROF. FARLEY: There is a considerable difference in 

 the cost of the powdered lead, costing more than the other, 

 but you use just half the amount. 



THE PRESIDENT: What is the expense per cask of 

 spray mixture? 



PROF. FARLEY : Perhaps a trifle greater in the case of 

 the powdered than it is with the usual grade of paste lead. 

 It doesn't go quite as far in our experience, but perhaps we 

 have been using it a little too strong, using a little too much 

 of it. 



QUESTION : Does the addition of extra lime to counter- 

 act the free arsenic affect the efficiency of the arsenate of 

 lead in the combination of lime-sulfur with arsenate? 



PROF. FARLEY : I don't think it would. I don't think 

 you would put in enough lime to lower the efficiency of the 

 lime-sulfur. I mentioned that in my paper. I was careful 

 not to say that the addition of lime to the lime-sulfur-arse- 

 uate of lead combination would prevent burning, but it 

 seems to me if free arsenic is formed with arsenate of lead 

 Hud the lime-sulfur combined, that free arsenic is supposed 

 to combine with the lime. In some cases there may not be 

 enough free lime to take up that free arsenic, and if you add 

 fiome lime it may prevent some of the burning. I say it may. 

 That has been suggested recently. I have heard it mentioned 

 by a number of different people, but I do not know of any- 

 very careful experiments that have been conducted on that 

 point. 



THE PRESIDENT : I am afraid we must draw this dis- 

 cussion to a close. We have some matters of business. Mr. 

 Wilfrid Wheeler has an important matter which he wants to 

 present. 



MR. WILFRID WHEELER : I have two matters I 

 would like to present to the Fruit Growers' Association at 

 this time, because I think they are as important as anything 

 that has to do with the actual growing. The first is in re- 

 lation to the apple-grading law, and the second is in relation 

 to an apple census. I am not going through this whole law. 



