454 



BOAED OF AGRICIjLTUEE. 



Muriate of Potash. 



[I. Sent on by M. W. Jefts, for Ashby Farmers' Club, Ashby, Mass.] 



[II. Collected of Boston Fertilizer Co., by C. P. Preston, Danvers, Mass.] 



[III. Collected of Bowker Fertilizer Co., at Amherst, Mass.] 



This form of potash compounds has proved to be one of 

 the most reliable potash resources for field and garden. 



Kainite. 



[Collected of D. A. Horton, Northampton, Mass.] 

 Moisture at 100° C. 

 Calcium oxide, 

 Magnesium oxide. 

 Potassium oxide, 

 Sulphuric acid, 

 Valuation per 2,000 lbs., 



This is a fair sample of its kind. Potash, in form of 

 kainite, has been applied with much success for forage 

 crops. It deserves a careful trial upon pastures and mead- 

 ows, in connection with bone fertilizers. 



Refuse Salt. 



[Collected of R. T. Prentiss, Holyokc, Mass.] 



Moisture at 100° C, 1.70 



Calcium oxide, 1.21 



Magnesium oxide, .41 



Sulphuric acid, 1.57 



Sodium chloride, 95.38 



The article is a fair specimen of its kind. A detailed 

 discourse of the various kinds of salt used for airricultural 

 purposes, etc., may be found in the annual report of the Mas- 

 sachusetts State Board of Agriculture for 1869, page 18. 



