EXPERIMENT STATION REPORT. 643 



larvcis and recent sets were seen. The}- were not very abundant, 

 for these trees nexer l>ecome very badly infested ; but they were 

 plentiful enough to make it desirable in oue case to spray with 

 another material July 13th. In the other, an application of 

 caustic soda on June i8th added something to the effect, and 

 re-spraying was not necessary until late in the season. 



The Vermont Beauty pears were worse infested, and on all 

 the treated trees larvae were already setting on the fruit June 

 28th, just after breeding began. There was not even that check 

 to the early brood that usually carries a treated tree into mid- 

 summer before re-infestation becomes generally noticeable. 



The peach was not badly infested and had recei\ed a dose of 

 caustic soda solution before it was treated with Salin.iene ; never- 

 theless, larvae and fresh sets appeared quite as early as they did 

 anywhere else. 



Altogether, while the material has not had as extended a test 

 as I intended to^ give, the results obtained were unsatisfactory 

 throughout and not sufficient to warrant further trials or favor- 

 able recommendations. 



UNIVERSAL INSECTICIDE AND SCALE KILLER. 



This material, manufactured by a company bearing the same 

 name as its product, and located at Flemington, New Jersey, 

 was brought to my attention during the late summer of 1903, 

 by inquiries from* persons who had either bought or intended to 

 buy it. As the company was devoloping quite a trade in Hun- 

 terdon county despite the high cost of its nuaterial, it \\as deemed 

 best to give it a careful test. 



At my request, the co'mpany sent me for trial a ten-gallon 

 can, and also- the approximate formula. The liquid, when re- 

 ceived, had the appearance of the solution that forms in the lime, 

 salt and sulphur wash when the lime settles to the bottom. 

 There was very little sediment even after long standing and no 

 formation of sulphur crystals. There was an odor of ammonia 

 and some other disinfectant and, avowedly, the material was a 

 lime and sulphur combination, with additions supposed to en- 

 hance its effectiveness. 



The directions were simple : Add 5 or 6 gallons of hot water 

 to each barrel, and spray. To my 10 gallons I added i gallon 

 of boiling hot water, and the 1 1 gallons were applied, March 

 loth, to thirteen trees, some of them requiring onlv a pint to 

 cover, others i^^j to 2 gallons. In each case the application was 



