40 The Bulletin. 



without burning. It is sold by some large drug manufacturers and by 

 those firms which specialize in spray chemicals. It is not kept by most 

 druggists in this State, but can be ordered through the larger firms. It is 

 sold in form of a thick white paste, or as a dry powder. Twice as much, 

 by weight, is required of the paste form as of the poAvder; and on the 

 other hand the powdered form costs about twice as much, by weight, as 

 the paste. It is therefore largely a matter of choice as to convenience, 

 and as to a saving of shipping charges where large quantities are to be 

 used. 



Sulphur. — There are two grades of sulphur: "flour of sulphur" and 

 "flowers of sulphur." For making the Lime-sulphur Wash the "flowers" 

 is considered better, but either may be used. Sulphur may be ordered 

 through any drug firm, or perhaps some general stores handle it or can 

 order it. At retail it costs from about fifteen to twenty cents per pound, 

 at wholesale from eight to twelve cents. 



Other Materials. — The other spraying materials mentioned in this 

 Bulletin — soap, oil, etc. — can be easily procured everywhere at varying 

 rates. 



COMMERCIAL MANUFACTURERS AND DEALERS. 



Following are the names and addresses of some manufacturers of 

 spraying chemicals : 



Thomsen Chemical Company, Baltimore, Md. Arsenate of Lead, 

 Lime-sulphur, Soluble Oil, and others. 



B. G. Pratt Company, 50 Church Street, I^ew York City. Oil wash 

 known as "Scalecide." 



James A. Blanchard Company, ISTew York, N. Y. 



Eked L. Lavenburg, 100 William Street, ISTew York City. Arsenate 

 of Lead, Paris Green. 



Vreeland Chemical Company, 26 Dey Street, Hudson Terminal 

 Building, New York City. Arsenate of Lead, Lime-sulphur. 



Niagara Sprayer Company, Middleport, N. Y. Lime-sulphur, Arse- 

 nate of Lead, and others. 



Grasselli Chemical Company, Cleveland, Ohio. Arsenate of Lead, 

 Lime-sulphur, and others. 



James Good, 939 North 'Front Street, Philadelphia, Pa. Caustic Pot- 

 ash, Whale Oil Soap. 



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

 Swift's Arsenate of Lead. 



BowKER Insecticide Company, New York, N. Y. Arsenate of Lead, 



and others. 



Powers- Weightman-Rosengarten Company, Philadelphia, Pa. Ar- 



senate of Lead, and others. 



