Samples I and II are, apparently, partly leached ; samples III 

 and IV are of a fair average composition. 



283. POTASH SALTS. 



Sent by the secretar}' of the Dartmouth Farmers' Club. 



I. Potash Salts ; a fused, hard mass, of a grayish-white color. 



II, Black or Blue Ash ; a moist, lumpy mass, easily pulverized. 



I II 



Pounds per hundred. 



Moisture at 100° C, 1.08 14.60 



Potassium oxide, 42.06 13.13 



Sodium oxide, 24.51 4.51 



Chlorine, 19.30 0.08 



Sulphuric Acid, 1.38 7.90 



Insoluble matter, 1.00 3.30 



These articles are evidently waste materials from some potash 

 industry. No. I represents a value of from $36 to $37 per ton ; it 

 contains some potassium sulphide, and ought to be exposed to the 

 air, previous to its a[)plication, to prevent injurious influences on the 

 young growth. No. II contains a considerable amount of carbonates, 

 and is better fitted for direct use as a potash source ; it is worth from 

 $11 to $12 per ton. 



284. KRUGIT. 



Bowker Fertilizer Co., Boston, Mass. 



Per Cent. 

 Moisture at 100° C, 4.82 



Sodium oxide, 5.57 



Potassium oxide, 8.42 



Calcium oxide, 12.45 

 Magnesium oxide, 8.79 



Sulphuric acid, 31.94 

 Hydrochloric acid, 6.63 



Insoluble matter (in acids), 14.96 



