286 AGRICULTURAL EXPERIMENT STATION. [Jan. 



5. Analyses, etc. — Qontinued. 



Muriate of Potash. 



[I., sent on from Amherst, Mass.; II. and III., sent on from South Hadley Falls, 



Mass.] 



Sulphate of Potash. 



[Sent on from Hatfield, Mass.] 



Per Cent 



Moisture at 100° C, 2.22 



Potassium oxide, 47.00 



Insoluble matter, Trace. 



Gypsu7)i (Land Plaster). 



Gypse (Calcium Carbonate). 



[Sent on from Pittsfiekl, Mass.] 



Per Cent. 



Moisture at 100° C, 1.64 



Calcium oxide, .50.87 



Insoluble matter, 2.87 



