DEPARTMENT REPORTS. 



221 



to 2.51b for 50 gallons of solution. This variation may account for the 

 difference in the results obtained from their use. 



253 

 254 

 261 



297 

 213 



Ansbacher Insecticide Co., Inc., 

 Sherwin-Williams Co., Chicago, 

 Sherwin-Williams Co., Chicago, 



New York, "Quick Death" 



"Fungi-Bordo" 



"FuDgi-Bordo" 



Paste. 



Jas. A. Blanchard, New York, " Lion Brand " 



Carpenter Udell Chemical Co., Grand Rapids, Mich., "Imperial Brand". 



76.84 

 63.72 



4.79 

 7.68 



4.0 



BORDEAUX-ARSENATE MIXTURES. 



Six samples of Bordeaux-arsenate mixture were obtained. In two of 

 the samples, 218 and 214, the amounts of arsenic found are slightly be- 

 low the amounts claimed but in all other respects the guarantees are 

 satisfied. 



In all of the samples the amount of arsenic is considerably in excess 

 of the copper as compared with the amount usuallj^ recommended for 

 adding to home-made Bordeaux. 



When these materials are used according to the printed directions 

 50 gallons of the prepared spray would contain less than one pound of 

 copper, expressed as copper sulfate, and from li/o to 2 pounds of lead 

 arsenate. Home-made Bordeaux as usually prepared contains from 2 to 

 4 pounds of copper sulfate in 50 gallons and when arsenate of lead is 

 used it is added at the rate of 2 to 5 pounds to 50 gallons of solution. 



269 

 236 

 214 

 218 

 275 



Manufacturer. 



Ansbacher Chemical Co., New York, 



"Adheso" — "Green label" 



Ansbacher Chemical Co., New York, 



"Adheso" — "Green label" 



Ansbacher Chemical Co., New York, 



"Adheso" — "Green label" 



Ansbacher Chemical Co., New York, 



"Adheso" — "Orange label" 



Bowker Insecticide Co., Boston, 



"Pyrox" 69.17 





44 28 

 49 87 

 59.10 

 58.03 



Arsenic Oxide. 



Metallic 

 Copper. 



Total. 



Soluble. 



■T3 



a 



3 

 o 



11 37 

 10 48 



8.71 

 6 64 



a 



3 

 o 



I 0.24 



8.39-9.25 0.40 



7.87 : 8.39-9.75 0.26 



8.8-9.3 i 33 

 5.25 ' 19 



Si 



a -^ 



a 



3 

 o 



C3 



3 



-a 



•a 



o 



•s 



2 



5.93 4-4 5 ' 26.32 



50 4.22 3.75-4.25 25 92 



77* 4.46 4-4.5 19.79 



77* 3.12 2.8-2.9 20.71 



75 ! 3.22 1.5 i 13.60 



I 



•Computed from 0.5% metallic arsenic. 



