THIRTEENTH ANNUAL MEETING. 85 



Some of the spraying was done on Friday, and a very heavy 

 rain came on Saturday night and Sunday morning-. We were 

 afraid that the spray had not dried sufficiently upon the trees, 

 and that it would be washed off. Such was not the case, and 

 when I saw these trees a few days ago they looked just as white 

 as if freshly s])rayed. An examination of the twigs indicates 

 that the mixture will be effective in destroying the scales. 



From our present knowledge, it seems wise to depend upon 

 lime and sulphur for this season, at least, as a spray to destroy 

 the scale in our commercial orchards. 



^lany of you have doubtless read of the attempts to prepare 

 this mixture without boiling. These are mostly in the experi- 

 mental stage and should be given further trial before we can 

 recommend their extensive use. 



Liuic and Sulphide of PotasJt. 



This mixture is an ideal one, as has already been stated, but 

 is too expensive for orchard use. It may be prepared as 

 follows : 



Lime i pound. 



Sulphide of potasli (liver of sulphur) i pound. 



Water 2 gallons ( i pailful) . 



The sulphide may be dissolved in water, in a pail or basin, 

 the lime slaked and the two substances put together and diluted 

 to the correct proportions. Sulphide of potash or liver of 

 sulphur may be ol)tained from any druggist and costs 12 or 

 14 cents per pound. The price is so high as to prohibit its 

 use on a large scale, but for spraying a few small trees or 

 shrubs in the back yard of a city or town lot without the trouble 

 of boiling, there is probably no better or more convenient 

 preparation. 



In our experiments this mixture adhered to the trees and 

 destroyed the scale about equally with the boiled mixture. 



Liver of sulphur has long been used as a fungicide. 



Sulpliide of Soda. 



Knowing that preparations of soda usually are cheaper than 

 potash preparation and have a similar action, I have been look- 

 ing about for an inexpensive commercial product of sulphide 



