286 AGRICULTURAL EXPERIMENT STATION. [Jan. 



5. Analyses, ETC. — Oontinued. 

 Muriate of Potash. 



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



Mass.] 



Moisture at 100° C, 

 Potassium oxide, . 

 Insoluble matter, . 



Sulphate of Potash. 

 [Sent on from Hatfield, Mass.] 



Per Cent. 



2.22 



47.00 



Trace. 



Moisture at 100° C, 

 Calcium oxide, 

 Sulphuric acid. 

 Carbonic acid, 

 Insoluble matter, . 



Gypsum {Land Plaster). 



[Sent 



1 from Millini^ton, Mass.] 



Per Cent. 

 14.01 



33.45 



46.86 



Trace. 



0.63 



Gypse {Calcium Carbonate'). 



[Sent on from Pitlsfield, Mass.] 



Moisture at 100° C, 

 Calcium oxide, 

 Insoluble matter, . 



Per Cent. 



1.64 



50.87 

 2.87 



