620 XEW JERSEY AGEICULTUEAL COLLEGE 



of crater is so low that it would seem, as if it could Imrm nothing, but 

 the combination that makes it effective against the scales evidently 

 makes it hard on foliage as well — especially when the latter is in the 

 growing stage. When the leaves are fully mature they seem to suffer 

 little. 



The matter of price may be alluded to, because it is an important 

 one to the farmer. At $1.25 per single gallon, with expressage added, 

 a spray gallon would cost about eight (8) cents, or altogether too 

 much for orchard work, in comparison with the two (2) cents for the 

 lime, salt and sulphur, or five (5) cents for K.-L. For the garden 

 with small ti'ees it will answer very well ; for an orchard of old apple 

 trees it is prohibitive. It is fair to sa.j that there is a material re- 

 duction in price in barrel lots, but at even the best figure quoted the 

 cost is very high when the necessity for thorough applications is con- 

 sidered. 



Soaleoide. 



This is the outcome of a series of experiments made at my sug- 

 gestion by the B. G. Pratt Company, 11 Broadway, New York, and 

 the material now on the market has not been practically tested by me 

 personally, but the other preparations leading up to it have been 

 tested, and in each successive lot the defects of the preceding samples 

 have been corrected. The company was good enough to send me, at 

 my request, a list of the Xew Jersey purchasers of five-gallon lots or 

 more, and I have communicated with nearly all, and have been over 

 the treated trees in several instances. 



Among the materials used in combination were Texas crude, Penn- 

 sylvania crude, various distillates and refined kerosene. ''Scalecide," 

 as it is now, is based on a distillate, combined with a sulphonated oil 

 and a percentage of rosin. 



Some ten gjillons of Texas oil, made soluble, were tried in the 

 Dickerson peach orchards, near Chester, in comparison with '^'Kill-O- 

 Scale." The material was exposed to cold and did not mix so W^ll as 

 other samples, partly due, perhaps, to the asphalt base. Nevertheless 

 the results were good and there was no sort of injury- to the trees. It 

 was decided, however, that this Texas oil would not work up as satis- 

 factorily as the Pennsj'lvania type. The dilution was one to twenty, 

 as with^^Kill-O-Scale." 



