LEAD ARSENATE. 



3^3 



19210. Eagle Brand. Adkr Color & Chemical Co., New 

 York. 



19212. Target Brand. American Horticultural Distribuiting 

 Co., Martinsburg, W. Va. 



19211. Disparene. The Bowker Insecticide Co., Boston, 

 Mass. 



19216. Star Bi-and. Fred. L. Layanburg, New York. 

 19215. Anchor Brand. Leggett & Bro., New York. 



19213. Swift's Arsenate. Merrimac Chemical Co., Boston, 

 Mass. 



18703. Duplicate of No. 19213^ purchased in market. 

 19643. Arsenate of Lead. Monmouth Chemical Wori«s, 

 Shrewsbury, N. J. 



19357. Arspnajip of Lejid. The PQwers-Weightman-Rosen- 

 garten Co., Philadelphia, Pa. 



19358. Aibpneta. Schoonmaker & Son, Cedar Hill-on-Hud- 

 son, N. Y. 



19209. Arsen3,te pf Lpad. The Vreel^nd Chemical Co., 123 

 Maiden Lane, New York, (factory at Lit;tle Falls, N. J.) 



Analyses of Arsenate of Lead. 



19210 

 19212 

 ig2ii 

 1921^ 

 192 1 5 

 192 1 3 

 18703 

 1994:5 

 19357 

 19358 

 19209 



Srand. 



Eagle - 



Target .... 



Disparene 



Star 



Anchor '. 



Swift's 



Monmouth ... 



Powefs-Weightm an 



Aibpneta 



Vreeland 



Original I^atprial, 



54-55 

 50.30 

 46.47 

 50.57 

 35-59 

 49.95 

 48.40 



58.44 

 51.79 

 41.95 

 33.65 



.H<5. 





28.46 

 34-03 

 35-11 

 35-63 

 44-05 

 33.08 

 33-78 

 25-59 

 33-70 

 37-90 

 41.44 



111 



9-3? 

 2.73 

 4-34 

 0.47 

 2.02 

 0.80 



P- 



1.41 



2.69 



7-94 

 0.74 



1-78 

 0.64 



O.ZI 



q.6g 

 1.23 

 1.26 

 1-75 

 3-27 

 0.40 



0.4* 



2.2( 



0.46 

 I-3I 

 0-39 

 0-5f 

 0.86 



0-57 

 0.30 

 6. go 



0.22 



Q.42 

 0.86 



Water-Frefi. 



.so 



32.76 

 24-75 

 25.91 

 25.57 

 26.56 

 29.79 



29-44 

 27.17 



23.69 

 20.19 

 33.02 



Oo 

 CO a. 



62.62 



68.47 

 65.59 

 72.0S 



68.39 

 66.09 



65.47 

 61.57 

 69.90 



65-^9 

 62.46 



4:6? 

 6.78 

 8.50 



2-35 



5-05 



4.12 



5 -0,9 



11.26 



6.41 



14.62 



4-52 



RESULTS OF ANALYSES. 



The analyses show lead arsenate to be far from a uniform 

 material; the arsenic oxide ranges from 11.29 to 21.91 per cent.. 



