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THE CONNECTICUT POMOLOGICAL SOCIETY. 



things in rather of a bad hght, namely, that he tried hme and 

 sulphur a number of years ago and gave it up. At that tmie 

 the lime and sulphur mixture was tried by quite a number of 

 people who gave it up because they did not know how to 

 make the lime and sulphur, but I can see no reason at all at 

 the present day why any man should even think of giving up 

 lime and sulphur as spraying material for the San Jose scale. 

 No one can want anything that is any more efficient for that 

 purpose than that preparation, because in the last two sum- 

 mers we have not simply controlled the scale, but we have 

 eradicated it. We have carried on a great many experiments 

 with it at the Pennsylvania station, and the lime and sulphur 

 mixture has been brought to a state of perfection where in 

 the last two years growers have practically not only con- 

 trolled the scale, but have eradicated it with two applications. 

 We have made three applications, the first one beginning at 

 the time when the young scale begins to emerge, and the next 

 two at intervals of ten days, when the young re-appear. We 

 have done that for two summers, and it has been very success- 

 ful. I do not see how it is possible that it would fail to do 

 so another summer. There have been whole classes in en- 

 tomology that have examined those trees for the scale, and 

 there has been none found. ' When we commenced our experi- 

 ments on those trees in the first place they were badly in- 

 crusted. I just speak of this because I did not want the im- 

 pression to go out that the lime and sulphur mixture was in- 

 efficient. 



Mr. Ives: How did the mixture that you used test? ZZ, 

 I believe, is the commercial test mixture. 



De. Stewart: The strength that we used was 2Z Centi- 

 grade. It is most remarkable how efficient it was. When I 

 first put it on, I expected to kill the young scale, but found 

 that where it had run down and struck the old incrustations 

 on the bark it had cleaned the tree by the first application, 

 killing not only all of the young scale, but over ninety per 

 cent of the old at that time, with that strength. This material 

 that I am speaking of now, the lime and sulphur is one that you 



