142 maine agricultural experiment station. i913. 



Arsenate of Lead Paste. 



According to the law arsenate of lead paste is adulterated if : 

 it contains more than 50 per cent of water ; it does not contain 

 arsenic equivalent to 12.5 per cent of arsenic oxide; and if it 

 contains water soluble arsenic equivalent to more than .75 per 

 ■cent arsenic oxide. Arsenic oxide contains 65.2 per cent metalic 

 arsenic. 



Table showing results of analyses of arsenate of lead arranged 

 alphabetic ally by manufacturers' names. 



Brand, Maker and Place, 

 Dealer and Town. 



T3 











a 



a 



3 





6 



"a 



















+3 



-*i 







4i" 

 " d C 



Xi 











W) 



M 





'^l 



-2S " 



iS m m 





S . 



c3 





^a 



^a 



^ 





^ SPh 



Remarks. 



30147 



30148 



30239 



30140 



30119 



Grasselli Paste." 

 Grasselli Chemical Co., Boston, 



Mass. 

 Haskell Implement & Seed Co., 

 Lewiston 



" Ansbacher's Triangle Paste." 

 A. B. Ansbacher & Co., N. Y. 

 Haskell Implement & Seed Co. 

 Lewiston 



' ' Hemingway's. ' ' 



Hemingway London Purple Co., 



N. Y. 

 Hovey & Wilson, Eastport 



Swift's Paste." 

 Merrimac Chemical Co., Boston. 

 Kendall & TMiitney, Portland. . 



"Paste." 



Powers- Weigh tman-Rosengarten 

 Co., Philadelphia, Pa. 



Cook, Everett & Pennell, Port- 

 land 



30158 "New Process." 



Sherwin-Williams Co., Boston, 



Mass. 

 |R. B. Dunning & Co., Bangor. . 



30247 " Orchard Brand StandardPaste " 

 Thomsen Chemical Co., Balti- 

 more, Md. 

 ,E. C. Milliken, Portland 



3019.5 "Orchard Brand SrandardPaste " 

 Thomsen Chemical Co., Balti- 

 more, Md. 

 Milliken & Philbrook, Portland. . 



1.15 



1.03 



1.10 



2.05 



47.8 



47.7 



48.0 



43.0 



41.7 8.4 



13.5 



10.1 



11.0 



1 . 03 49 . 1 9.8 



0.90 42.1 11.2! 



0.90 40.7 11.1 



0.4 



0.3 



0.6 



Above standard. 



Above standard. 



Contains too much 

 water soluble 

 arsenic. 



0.4 



0.0 



Above standard but 

 0.8 % below claim 



on package. 



Conforms with 

 standard. 



0.5iAbove standard. 



0.8 



0.9 



Contains too much 

 water soluble ar- 

 senic. Short weight. 

 Carries enough to- 

 tal arsenic to off- 

 set shortage in 

 weight. Unlawful. 



Short weight but off- 

 set by total ar- 

 senic. Too high 

 water soluble arse- 

 nic. Unlawful. 



