8 THE CONNECTICUT POMOLOGICAL SOCIETY. 



scarcely call it better, because it is somewbat more expensive. 



Tbe kerosene-limoid mixture was unsatisfactory, because 

 it did not prove as destructive to the scales as the lime and 

 sulphur washes. Large peach trees badly infested were 

 sprayed, a portion v\'ith kerosene-limoid and the remainder 

 adjoining- with the boiled lime-sulphur wash. Our examination 

 of the sprayed trees showed that the kerosene-limoid mixture 

 had destroyed about 88 per cent., of the scales, while the lime- 

 sulphur wash had killed about 95 per cent. This does not seem 

 like a very great difference, but late in October, at the final 

 examination, we found the kerosene-limoid trees just about 

 as thoroughly infested with living scales as when we sprayed 

 them. The lime-sulphur trees, on the other hand, though 

 adjoining, were comparatively free from scale, only a few 

 living ones being found, though plenty of dead ones. 



Where a tree is well sprayed with lime and sulphur the 

 scales do not again become so readily established upon it, 

 according to my observations. Others have noted similar 

 results. Salt is not beneficial. 



Reckoning lime at $2.00 per barrel, sulphur at $2.85 per 

 100 lbs., hay salt at 60 cts. per 100 lbs., caustic soda (74 per 

 cent.) in 25 lb. pails at 6 cts. per pound, sal soda at 2 cts. per 

 pound, sodium sulphide in no lb. drums at 3^ cts, per pound, 

 limoid at $2.50 per barrel of 150 lbs., and kerosene at 10 cts. 

 per gallon, tlicsc being retail prices, forty gallons, or a barrel, 

 of each of the several spray mixtures costs : — 



Lime-Sulphur Mixture $ .54 to $ .84 



Kerosene-Limoid Mixture (25% kerosene).. 1.66 



A brief summary of the results of the spraying experiments 

 was published in a four-page bulletin and mailed to the Con- 

 necticut members of the Pomological Society in October. 



You have doubtless heard of the so-called soluble petroleum 

 compounds on the market sold under the name of "Scale-cide," 

 "Kill-o-scale" and "Surekill." We have not experimented 

 with all of these in Connecticut, but Prof. J. B. Smith finds 

 them quite satisfactory in New Jersey, and I have known of 

 their being used in a small way by several different persons. 

 I scarcely expect these preparations to replace the lime and 

 sulphur washes for orchard treatment on account of expense. 



