1888.] 



PUBLIC DOCUIMENT — No. 33. 



171 



Ground Bones. 



[Sent on from Westford, Mass.] 



The mechanical condition of both samples was much the 

 same ; the valuation above given has been for this reason 

 the same. The desirability of having ground bones sold 

 only by a guaranteed composition finds an additional strong 

 illustration in this case. 



Ground Bone. 



[Sent on from Concord, Mass.] 



Moisture at 100° C, 



Total i^hosphoric acid, 



Reverted phosphoric acid (7 J cents per pound). 

 Insoluble phosphoric acid (4 cents per pound), 

 Nitrogen (15 cents per pound), . 

 Insoluble matter, 



Valuation per 2,000 pounds, 



Per cent, 



3.05 

 17.72- 



5.55 

 12.17 



5.15 



1.19 



$33 52 



Steamed Bone and Meat. 



[Sent on from Fitchburg, Mass.] 



Moisture at lOO'^ C, 



Total phosphoric acid (5 cents per poimd), 

 Soluble phosphoinc acid, .... 

 Reverted phosphoric acid, . 

 Insoluble phosphoric acid, ...» 

 Nitrogen (15 cents per i^ound). 

 Insoluble matter, 



Valuation per 2,000 poimds, $35 25 



Per cent. 



4.71 

 20.28 

 0.56 

 4.54 

 14.18 

 5.37 

 1.19 



