EXPERIMENT STATION. 



525 



Douhh Manure Salt. 



[Sent on from New York.] 

 [I. Crystallized double manure salt. II. Commercial double manure salt.] 



ir. 



Moisture at 100° C, . 

 Magnesium oxide, . 

 Calcium oxide, . 

 Sodium oxide, . 

 Potassium oxide (oj cents per 

 Sulphuric acid, . 

 Chlorine, .... 

 Insoluble matter, 

 Valuation per 2,000 lbs., . 



pound). 



11.58 



10.81 



3.16 



22.40 



39.89 



0.14 



0.26 



$24 64 



6.58 



11.50 



2.93 



4.15 



23.28 



43.43 



1.08 



1.80 



125 61 



The first-named article consisted of large, clear, colorless 

 and well-developed crystals, which, in consequence of a loss of 

 water, turned gradually whitish on exposure to the air. The 

 second one consisted of a yellowish white powder, and repre- 

 sents the article for our markets. Both salines consist essen- 

 tially of sulphate of potash and sulphate of magnesia, and are 

 remarkably free from chloride (common salt, etc.). 



Fif<h Waste. 

 [I. Sent on from Boston. II. Sent on from Gloucester. IK. Sent on from Marshfield.] 



