THE AMERICAN FARMER. 



37 



products; hence the fanner may be able to calculate the extent of exhaustion of his soil 

 caused by certain crops. On the other hand, by consulting the table representing the compo 

 sition of different manures, he can find what fertilizers will best supply the requisite elements 

 for special crops, or what will best restore the elements extracted by the growing of certain 

 products. 



TABLE 



For Calculating the Exhaustion of Soils by Crops and Enriching by Manures. Average Quanti 

 ties of Water, Organic Matter, Ash, Nitrogen in Organic Matter and Potash, Lime, Phosphoric 

 Acid, and other Ingredients in Ash, of fresh (Green) and Air-dry Materials. 



PLANTS. 



