COMMERCIAL FERTILIZERS. 



231 



Moisture lost at 100° C. 



Volatile matter 



Ash constituents . 



Total phosphoric acid 



Nitrogen 



Insoluble matter, sand, etc. 



Per cent. 



14.80 



91. GO 



8.40 



.53 



9.97 



.64 



D. — Soup from Cattle-Feet. 



One hundred pounds left 5.5 pounds of solid matter. One 

 hundred parts of solid matter showed — 



Moisture lost at 100° C. 



Volatile matter 



Ash constituents . 



Total phosphoric acid . 



Nitrogen 



Insoluble matter, sand, etc. 



Per cent. 



10.80 



92.50 



7.50 



.46 

 14.47 



.26 



E. — Liquid from Lime -Vats for treating Hides. 



One hundred parts left 4.5 pounds of solid residue, 

 hundred of that solid residue showed — 



One 



F. — Mass from Bottom of Lime -Vat. 



One hundred pounds left 5.4 pounds of solid matter. One 

 hundred parts of that solid matter showed — 



(Messrs. L. B. Darling & Co. ; collected of Mr. A. W. Cheever, Sheldonville, 



Mass.) 



Per cent. 



Moisture lost at 100° C 11.40 



Total phosphoric acid ...... 13.43 



Soluble phosphoric acid ..... .80 



