HOW THEY CHARGE US. 



361 



Ashk» from Lime-kilns. 



Calcium oxide, 

 Magnesium oxide, 

 Potassium oxide, . 

 Phosphoric acid, . 

 Sulphuric acid, 

 Iron and alumina, 

 Silicates, 

 Carbonic acid, 



38.03 

 1.80 

 03 



t 



11.09 



9.66 



* Trace. 



t Not determined. 



In the case of No. I., one bushel weighed 44 pounds and 

 was sold at 33^ cents, at the railroad depot. 



In No. II., one bushel weighed 63 pounds and was sold at 

 35 cents, at the railroad depot. 



One ton of No. I. contained 45 bushels. 



One ton of No. II. contained 32 bushels. 



One ton of No. I. contained 920 pounds of calcium oxide, 

 costing $15.24. 



One ton of No. II. contained 760 pounds of calcium oxide, 

 costing $11.20. 



One thousand pounds of calcium oxide in No. I. cost 

 $16.36. 



One thousand pounds of calcium oxide in No. II. cost 

 $14.70. 



Both articles are scarcely more valuable for agricultural 

 purposes than an air- slacked lime. The percentage of wood 

 ashes was but very small. Quicklime is sold in the same local- 

 ity where these lime ashes are used at $2.80 per barrel of 300 

 pounds, in case more than six barrels are bought in one lot. 

 Allowing 35 cents for each barrel, one ton of quicklime, 

 or about 1,800 pounds of calcium oxide, would cost in that 

 form $16.33. 



Peruvian Guano. 



Two samples of Guanape guano, taken at the storehouse of 

 C. L. Bartlett, in Boston, July 10, 1874, gave the following 

 results : — 



46 



