STATEMENT OF INSECTICIDE ANALYSES 653 



acid, total and soluble ic arsenic, total and soluble ous arsenic, 

 calcium and dye by difference. The ic arsenic in both cases 

 should be reported as arsenic pentoxid and the ous arsenic as an 

 arsenic trioxid. The calcium should be reported as calcium oxid. 

 The words "by difference" should always follow the dye figure. 



SCHEME FOR REPORTING RESULTS OF ANALYSES 



PARIS GREEN 



Moisture % 



Sand 



Sodium sulfate 



Total arsenious oxid 



Total copper oxid 



Acetic anhydrid 



Total 



Soluble arsenious oxid by Avery-Beans Method % 



Soluble arsenious oxid by water extraction method 



LONDON PURPLE 



Moisture % 



Insoluble in hydrochloric acid 



Total arsenic oxid 



Total arsenious 



Calcium oxid 



Dye (by difference) 



Total 



Soluble arsenic oxid 



Soluble arsenious oxid 



Soluble calcium oxid 



