As the principal part of the article was of a coarse medium quality, 

 insoluble phosphoric acid has been valued four cents per pound and 

 nitrogen eleven cents. 



302. BONEBLACK WASTE. 



Sent on for 'examination. 



JPer Cent. 



Moisture at 100° C, 10.65 



Total phosphoric acid, ' 29.64 



Insoluble matter, ' 2.80 



Valuation per 2000 lbs., $23.71. 



This article is best used in the form of a superphosphate, commouly 

 called, dissolved boueblack. 



303. FISH WASTE. 



Sent on for examination from Boston, Mass. 



Per Cent. 



Moisture at 1 00° C . , 71.11 



Nitrogen, 2.21 



Phosphoric acid, 0.60 



Fat, 0.45 



Valuation per 2000 lbs., $4.58 



The article consisted of coarse pieces of fish, and its valuation is 

 based for that reason on the rates of cost adopted for coarse fish- 

 scraps : nine cents per pound of nitrogen and five cents per pound of. 

 phosphoric acid. 



364. FISH AND POTASH. 



Sent on for examination, 



I'er Cent. 



Moisture at 100° C, 23.58 



Total phosphoric acid, 6.26 



Soluble " " 3.58 



Reverted " " 1.33 



Insoluble " " 1.35 



Potassium oxide, 3.24 



Nitrogen, 3.07 



Insoluble matter, 1.90 

 Valuation per 2000 lbs., $22.00. 



