114 



THIRTY-FOURTH FRUIT-GROWERS ' CONVENTION. 



that will do for the red and purple scale. They are there all the time. 

 All you want are conditions favorable to hatch them out. (Applause.; 



MR. MASKEW. Ladies and Gentlemen : I don't quite tret the point 

 that I wished to make. Our experiments so far have led us to believe 

 that uniformly satisfactory work will never be obtained until this 

 method of guessing at things is supplanted by a rational one of knowin^r 

 the cubic contents of the tent, and further, the system of so much 

 cj^anide must be supplanted by the system of a certain per cent of 

 cyanide to the hundred cubic feet. We are striving alon^i- these lines all 

 the time. Mr. Goodrich called your attention to the fact that we 

 measured trees over and above the earth. AVe realized promptly to make 

 these investigations of permanent value to the citrus growers, we must 

 give you something practicable. A simple narration of the method 

 employed would be of no value to you. Therefore, one of the greatest 

 problems has been to take the methods employed by us in these experi- 

 ments and reduce them to a practical basis, so practical as to make 

 them available in commercial operations, and so simplified that they 

 would be within the comprehension of the most illiterate of fumigators. 

 so that they will get good results. That is. it would be futile for us to 

 give you dosage corrected for leakage, and th^n have this depend 

 entirely on guesswork. 



I am afraid I am anticipating the report, but I will tell you that the 

 United States Department of Agriculture, through the Bureau of Ento- 

 mology, has originated a device that at the cost of just a few cents can 

 be permanently applied to every fumigating tent, and will make each 

 and every tent to which it is applied practically self-measuring the 

 moment it is thrown over the tree. This will give you the area, and 

 supplemented by the calculation tables invented by Professor Woglum, 

 will, as near as we can say at the present time, make these operations 

 easy and exact. 



The next point in the paper was the question of chemicals. I think 

 that Mr. Woglum went into that so thoroughly in the paper that a 

 general discussion of the chemicals, in so far as we have used them up 

 to this date, Avould be consuming time that might be devoted to better 

 purpose. However, provided there are any questions that you wish 

 to ask on the matter of chemicals, we will try to answer them. 



MR. CA]\IFIELD. Can you give us any light on the dosage of the 

 acid used, or the strength of the acid 1 



MR. ]\IASKEW. ]Mr. Woglum mentioned the amount of acid to 

 the amount of cyanide that seemed to be satisfactory. As to the dif- 

 ference in the acid, we have made no tests in this matter up to this 

 time to determine if there is any difference or not. However, we 

 have diligently pursued this subject, and we have gathered up quite 

 a fund of information to serve as a foundation when the opportunity 

 occurs to make these tests. 



MR. N. W. BLAXCHARD. What is the result when an excess of 

 water is used? 



