THlRTEEXTll AXXUAL MEETIXG. 99 



Question : I would like to ask Prof. Britton what sort of 

 lime he used. 



Prof. Britton : I used some Canaan lime, and some from 

 Lenox, Mass. We like the whitewash or finishing lime. Mor- 

 tar lime is cheaper, but leaves a sediment that tends to clog the 

 pumps. Some of the Canaan mortar lime that we purchased 

 contained nearly 40 per cent, of magnesia. 



Question : I will ask Mr. Hale for his experience in leaving 

 out the salt from the solution. It is supposed to make the solu- 

 tion stick to the branches. 



Mr. Hale : In our spraying at Glastonbury last year, salt 

 was used in nearly all the spraying, — a portion without salt. 

 That without salt would stay on the tree. In Georgia we 

 sprayed 41.000 trees without any salt in the mixture, — 20 lbs. 

 of lime and 50 lbs. of sulphur to 50 gallons of water. The 

 trees were thoroughly sprayed, and the month of December 

 was clear and dry, but after Christmas time and during the 

 early part of January there were heavy and incessant rains, 

 more rain than usual. I have not seen the trees, but my super- 

 intendent reports that it is remaining on thoroughly and well, 

 — no appearance of its being washed from the trees. In the 

 matter of cooking, we found that thirty to forty minutes boiling 

 is enough to get a thorough solution. I got the same apparent 

 results in twenty to twenty-five minutes. 



I have never made much of a paste with sulphur and water 

 except by the hand. Put two or three gallons of water in 

 the bottom of the barrel, dump in the lime, turn on the steam, 

 turn on the water gradually, have the steam running through 

 it all the time, and you have the heat of the lime and of the 

 steam at the same time. I shall not use any more salt. 



Dr. E. P. Felt of New York : If I may be accorded a minute, 

 I want to say this : in listening to this discussion on the methods 

 of controlling the San Jose scale, I have been much struck by 

 the parallel lines along which we have been working in New 

 York State as compared with those in Connecticut. While 

 listening to Professor Britton, I could not help thinking how 

 precisely he expressed my own ideas ; his work and mine agree 

 almost entirely. ]\Iy object in rising is simply to bring in one 

 more line of evidence concerning the effectiveness and value 

 of this lime and sulphur solution — or mixture, rather — and per- 

 haps throw a little light on methods of preparation. 



