320 AGRICULTURAL EXPERIMENT STATION. [Jan. 



5. Analyses, etc. — Continued. 

 Nitrate of Soda. 



Moisture at 100° C, 

 Nitrogen, 

 Insoluble matter, 



[Sent on from Amherst, Mass.] 



Per Cent. 



1.82 



14.72 



.12 



Carbonate of Potash. 



[Sent on from Amherst, Mass. J 



Per Cent. 



Water of combination, 26.88 



Potassium oxide, . . . . . . . . . .18.48 



Magnesium oxide, , . . . . . . . . ,19.52 



Insoluble matter, 39 



Odorless Phosphate. 



[I., sent on from Hatfield, Mass. ; II., sent on from Marshfield, Mass. ; III., sent on 

 from Amherst, Mass.] 



Concentrated Phosphates. 



[I., double superphosphate; II., phosphate of ammonia; III., phosphate of potash; 

 sent on from New York, N. Y.] 



* Not determined. 



