288 AGRICULTURAL EXPERIMENT STATION. [Jan. 



5. Analyses, etc. — Continued. 



Ground Bone. 



[I., sent on from Northborough, Mass. ; II. and III., sent on from Westborough, 

 Mass.; IV., sent on from Townsend, Mass.] 



Mechanical Analyses. 



Chemical Analyses. 



Bone Dust. 



[Sent on from Hatfield, Mass.] 



Moisture at 100° C, 

 Total phosi:)horic acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble j^hosphoric acid, 

 Nitrogen, 

 Insoluble matter, . 



Per Cent. 



9.70 

 26.39 



0.15 

 14.32 

 11.92 



3.74 

 Trace, 



Ivory Dust. 



[Sent on from Lincoln, Mass.] 



Per Cent. 



Moisture at 100° C, 11.50 



Ash, 52.63 



Total phosphoric acid, . . ; 24.56 



Soluble phosphoric acid, ; . . 0.97 



Reverted ])]u)sphoric acid, . . 17.97 



Insoluble i)hosphoric acid, 5.62 



Nitrogen, 6.64 



