64 IMPROVEMENT OF SOILS. 



may be called chemical improvements, or the use of 

 manures, b. If there be a physical defect, if the 

 land is too wet, too light, too stiff, or if from either 

 of these causes it abounds in noxious compounds, the 

 remedies come more properly under what may be 

 called mechanical improvements. This branch of the 

 subject will first attract our attention, and will be 

 considered in the following chapter. 



