New York Agricultural Experiment Station. 457 



Hammond's slug shot. 



Moisture 10 . S8 per ct. 



Sulphate of lime (gypsum) 74 . 72 



Arsenious oxide 1.04 



Copper oxide . 59 



Iron and aluminum oxides 3. 15 



Silica 2.77 



Loss on ignition 6 . 78 



DEFECTS OF PRESENT PARIS GREEN LAW. 



In its present form the Paris green law of this State is seri- 

 ously defective in seA'^eral respects, most prominent of which 

 are the following: 



1st. The present law wholly fails to protect consumers from 

 adulteration of Paris green by water-soluble arsenic compounds, 

 the most common of which is uncombined arsenious oxide or 

 common white arsenic. 



2d. The total amount of arsenic required in Paris green by 

 the present law, viz., the equivalent of 50 per ct. of arsenious 

 oxide is needlessly low. In our examination of Paris green as 

 sold in this State during the past two years, the lowest amount 

 of arsenic found was 55.34 per ct., over five per ct. above the 

 present required standard. 



3d. The law fails to require that the arsenious oxide in Paris 

 green should be in combination with copper. This omission 

 offers opportunity for serious abuse. Sample No. 50 offers a 

 good illustration of this. In that case there is not one-fourth 

 as much copper as should be present to combine with the 

 arsenic. 



In order to remedy these defects, the section of the law that 

 so completely fails to define Paris green, should be changed so 

 as to cover the following points: 



1st. Paris green should be required to contain an amount of 

 arsenic in combination with copper equivalent to 54 per ct. of 

 arsenious oxide. ' ^ ■ ^ 



2d. Paris green should be legally declared adulterated if it 

 contains arsenic in water-soluble forms equivalent to more than 

 three per ct. of arsenious oxide. 



