36 AGRICULTURAL TEXT-BOOK. 



115. IV. The following (A,) is from an analysis of an inferior whest 

 soil, at Three Rivers, Michigan, by Dr. S. H . Douglass, compared with 

 a good and fertile soil (B,) analyzed by Prof. Norton. 



1000 parts gave soluble in water A. B. 



Humic acid and ammonia, ... 0.264 4.740 



Silica, - 0,063 1.299 



Lime, - .... 0.256 0.389 



Potash and Soda, ..... 0.243 0.445 



Iron, alumina, and phosphates, 0.120 .... 



1000 parts gave insoluble in water 



Silica, - 902. 788.45 



Lime, - - - 1.7 10.98 



Iron, alumina, and phosphates, - 34. 59.46 



Humic acid, ..... 4.7 



Potash and Soda, - - - 2.04 



Organic matter, ..... 54. 



Not ascertained, .... % 654 



116. V. Analysis of an impoverished soil in the town of Freehold, 

 Monmouth County, New Jersey, (A,) with the constituents which it 

 ought to contain to render it productive, (B.) (Dr. Antisell.) 



A. B. 



Organic matters, - - - 4.50 9.70 



Silicates, ... . 87.60 



Alumina, - - - - 3.65 5.70 



Lime, ...... 0.45 5.90 



Magnesia, - - trace 



Per-oxide of iron, - - - - 1.39 .... 



Potash, ... 0.01 0.20 



Soda, 0,08 0.40 



Chlorine, - - - - 0.06 0.20 



Sulphuric acid, - - - 0.12 0.20 



Phosphoric acid, with iron as phosphate, * 0.03 0.40 



Carbonic acid, - - - - 4.00 



Moisture, - - . 2.00 



Loss, ... . 0,01 



100.00 



