24 The Bulletin. 



solved by morning. This should be in a wooden receptacle. After the 

 bluestone has dissolved add water to make 25 gallons (if there is not 

 that amount already). 



Slake the lime slowly (preferably with hot water), and when com- 

 pletely slaked add water to make 25 gallons. Keep this in a separate 



keg or barrel. 



We now have 25 gallons of bluestone solution and 25 gallons of the 

 lime solution. We now take equal parts of each of these solutions and 

 pour them together into a third tub or barrel. Do not pour a bucketful 

 of one into a half-barrel of the other, but mix them always in equal 

 quantities. Thus we may take two water buckets and fill one with the 

 lime solution and the other from the bluestone solution and then pour 

 them both at the same time into the third barrel or keg. This little 

 point of always mixing them in equal quantities results in a better mix- 

 ture than when they are carelessly mixed, or when the whole mass of 

 one solution is poured bodily into the whole mass of the other. Always 

 stir the solution well before dipping out, so that the liquid you take out 

 shall be fully charged with the ingredients of the solution. 



Adding the Poison. — The arsenate of lead paste is first dissolved in 

 just enough water to make it liquid and is then stirred into the Bor- 

 deaux mixture. It is then ready to apply. 



Strain Before Using. — Before using, the mixture must be carefully 

 strained through a cloth or fine wire gauze. Kemember that all the 

 spray must come out through the small hole in the end of the nozzle; 

 therefore, to avoid clogging, strain carefully before using. Care in the 

 thorough straining before spraying will pay for the trouble many times 

 over. If one uses considerable quantities of the mixture, it is well to 

 have a large funnel strainer made, fitted with two nettings, one of iron 

 wire Avindow-screening and the other with much finer gauze, preferably 

 of brass. Having strained the poisoned mixture, it is ready to apply. 



Arsenate of lead can be secured from, or through, a number of the 

 larger drug stores in the State. If not to be had in your locality, it 

 may be ordered from any of the following : 



Thomsen Chemical Company, Baltimore, Md. 

 James A. Blanchard Company, New York, 1ST. Y. 

 Fred. L. Lavenburg, 100 William Street, New York, N. Y. 

 Vreeland Chemical Company, 26 Dey Street, Hudson Terminal 

 Building, New York, N. Y. 



Niagara Sprayer Company, Middleport, N. Y. 



Grasselli Chemical Company, Cleveland, Ohio. 



Merrimac Chemical Company, 33 Broad Street, Boston, Mass. 



Bowker Insecticide Company, New York, N. Y. 



Powers- Weightman-Rosengarten Company, Philadelphia, Pa. 



