456 Report op Inspection Work of the 



EXAMINATION OF MISCELLANEOUS INSECTICIDES. 



ANALYSIS OP ARSENOID. 



The 'Sample examined was made by the Adler Oolor and Chem- 

 ical Works of New York city and contains: 



Total arsenic equivalent to arsenious' oxide 58.82 per ct. 



Water-soluble arsenic equivalent to arsenious oxide. 2.94 " 



Copper equivalent to copper oxide 30.76 '* 



Moisture 1.91 " 



ANALYSIS OP PARAGRENE. 



One sample of this material was found to contain: 



Total arsenic equivalent to arsenious oxide 3(1.11 per ct. 



Water-soluble arsenic equivalent to arsenious oxide. 1.47 " 



Copper equivalent to copper oxide 17 . 87 " 



Calcium equi^ alent to calcium oxide 14 .20 " 



Moisture S . 15 " 



ANALYSIS OF BLACK DEATH. 



Moisture . 78 per ct. 



Sulphate of lime (gypsum) 45 . 34 



Magnesium oxide 3 . 98 " 



Iron and aluminum oxide 3.02 " 



Arsenious oxid^ . 79 " 



Copper oxide . 41 



Silica 5.42 '♦ 



Loss on ignition 28.91 " * 



Whatever efiiciency this material may have as an insecticide 

 is not due to the Paris green or other arsenic compounds con- 

 tained in it. 



ANALYSIS OP BUG DEATH. 



Moisture 0-25 per ct. 



Zinc oxide 8G . 80 



Iron oxide 5 . 20 



Lead oxide 2.01 



Silica 2.96 •; 



Loss on ignition 2.43 



Phosphoric acid .03 



Nitrogen ' ^-'^^ 



Potash 0.00 " 



Some claims are made for this material as a fertilizer, but the 

 claims are not supported by the results of analysis. 



