11 



Moisture at 100^ C. 



Potassium oxide, 



Phosphoric acid, 



Nitrogen, 



Insoluble matter, * 71.07 



*Not determined. 



III. 



OBSERVATIONS REGARDING THE COMPOSITION OF 

 PARIS GREEN. 



By C. A. GOESSMANN. 



A. PARIS GREEN. Common Brand. 



I. II. and III. From Amherst, Mass. 



IV. From Boston, Mass. 



Ver Cent. 



I. II. III. ir. 



Moisture at 100* C. 1.38 1.05 .67 1.20 



Arsenious oxide, 54.85 54.14 53.73 56.04 



Copper oxide, 32.55 31.05 30.60 32.30 



Insoluble matter, in diluted hydro chloric acid, .40 



Calcium oxide. Magnesium oxide. Potassium oxide, Sodium oxide,. 

 Sulphui'ic acid, and Clilorine not pr. sent in appreciable quantities. 



B. " THE LION BRAND Ni:W PROCESS PARIS GREEN."— 



James Blancliard, Manufacturer. 



V. and VI. From Amherst, Mass. 

 VII. and VIII. From Pea body, INIass. 



