288 AGRICULTURAL EXPERIMENT STATION. [Jau. 



5. Analyses, ETC. — Continued. 



Ground Bone. 



[I., sent on from Northborougb, Mass.; 11. and III., sent on from Westborough, 

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



Mechanical Analyses. 



Fine, 



Fine medium, 



INIedium, 



Coarse medium, 



51.57 

 36.59 

 11.84 



47.50 

 23.96 

 16.10 

 12.44 



46.93 

 24.76 

 17.46 

 10.85 



37.30 



20.01 

 24.83 

 17.86 



Chemical Analyses. 



Boyie Dust. 



[Sent on from Hatfield, Mass.] 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoi'ic acid. 

 Insoluble phosphoric acid, 

 Kitrogen, 

 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 phosphoi'ic acid, . 0.97 



Reverted phosphoric acid, 17.97 



Insoluble i^hosjihoric acid, 5.62 



Nitrogen, 6.64 



