30 Maine Agricultural Experiment Station. 1918. 



Arsenical Insecticides Analysed in ipi6. 



Name and Addeess of 

 Maker. Name of Goods 

 and Source of Sample. 



Claims Mads on Label. 



Results of Examination 



ARSENATE OF LEAD 

 POWDER 



Corona Chemical Co., New- 

 ark, N. J. Dry Powdered 

 Arsenate of Lead. G. W. 

 Larrabee, Kennebunk an'] 

 White Company, Rockland. 



Grasselli Chemical Co. Gras- 

 selli Arsenate lead Powder. 

 Haske'l Implement a"d 

 Seed Co.. Lewist:n. 



Not less than 98 per cent 

 lead arsenate; 19.5 per cent 

 total arsenic. Not more 

 than 2 per cent inert in- 

 gredients; .5 per cent water 

 soluble arsenic. % pound 

 and 1 pound. 



Not less than 96 per cent 

 lead arsenate; 20 per cent 

 total arsenic. Not more 

 than 4 per cent inert in- 

 gredients; .75 per c:nt 

 water soluble arsenic. One 

 pound. 



Sherwin and Williams Co., ,Not less than 30 per cent 

 Chicago. Dry Powder Ar- arsenic oxide. Not more 

 senate of Lead. Kendall than 1 water soluble ar- 

 and Whitney, Portland. j senic. Ha'f pound. 



Swift's Arsenate of Lead Dry Not less _ than' 63 . per cent 



Powder. Merrimac Chem- 

 ical Company, Boston. H. 

 H. Crie Co.. Rockland. 



ARSENATE OE LEAD 



PASTE 



Grasselli Arsenate of Lead 



Paste. Haskell Seed and 



Implement Co., Lew.'ston. 



Lion Brand Arsenate of 

 Lead Paste. Belfast Farm- 

 ers' Union, Belfast. 



P-W-R Lead Arsenate Paste. 

 L. K. Leggett, Portland. 



Swift's Arsenate of Lead. 

 Merrimac Chemical Com- 

 pany, Boston, King-Dex- 

 ter Co., Portland. 



ARSENITE OF ZINC 

 POWDER 

 Thomsen Chemical Co., Bal- 

 timore. Md. Arsen ; te of 

 Zinc Powdered. Skowhe- 

 gan Farmers' Union, Skow- 

 hegan. 



PARIS GREEN 

 Ansbacher and Company's 

 Paris Green. C. O. Saw- 

 yer and Co., Old Town. 



lead oxide; 25 per cent ar 

 senic- oxide. Not more than 

 1.5 per cent water soluble 

 arsenic ■ oxide. 1 pound. 



Not • less than 15 per cent 

 arsenic oxide. Not over 

 50 per cent water; .50 per 

 cent water soluble arsenic. 

 One pound. 



Not less than 50 per cent 

 arsenate of lead; 12.5 per 

 cent arsenic oxide. Not 

 more than 1 per cent water 

 soluble arsenic. 



Not less than 15 per cent 

 arsenic oxide. Not more 

 than .75 per cent water 

 soluble arsenic. One pound. 



Not less than 31.50 per cent 

 lead oxide; 12.50 per cent 

 arsenic oxide. Not more 

 than .75 per cent water 

 soluble arsenic. One pound. 



Not less than 30.5 per cent 

 total arsenic. Not more 

 than 1 per cent water sol- 

 uble arsenic. 2 pounds. 



Not less than 55 per cent 

 arsenious trioxide and not 

 more than 3% per cent in 

 free (uncombined) state. 

 One pound. 



Nos. 30438 and 3 4,7. 

 Weight and composition 

 as claimed. 



No. 30441. Weight and 

 composition as claimed. 



No. 30414. Weight and 

 composition as claimed. 



No. 30428. Weight and 

 composition as c'aimed. 



Nos. 30439 and 33445. 

 Weight and composition 

 as claimed. 



No. 30461. Inside can rusty. 

 Holes in bottom of can. 

 Rust in sample. Water 

 and arsenic as claimed. 

 Weight of can contents 

 13.2 ounces. 



No. 30400. Weight as 

 claimed. Slightly less 

 total and slightly more 

 water soluble arsenic than 

 claim. 



No. 30399. Weight and 

 composition as claimed. 



No. 30470.' Slightly under 

 weight. Composition as 

 c'aimed. 



No. 30462. Weight and 

 composition as claimed. 



