ADAPTATION. 81 



the color or texture of that mixture, which belongs 

 to the nomenclature of varieties. Thus a clayey- 

 soil with sand, is a sandy clay ; this is the name of 

 the species : if the mass is yellow, and it is thought 

 worth while to notice that circumstance, then it is 

 a yellow sandy clay, which expresses at once the 

 genus, species, and variety. A soil containing 

 equal parts of clay, lime, and sand, would, as a gen- 

 eric term, be called clay, lime, and sand ; if it con- 

 tained no other mixture in considerable quantity, 

 the term entire might be added as a specific dis- 

 tinction ; and if notice was to be taken of its color 

 or degree of comminution, it might be termed a 

 brown, a fine, a coarse, a stifi", or a free entire clay, 

 lime, or sand." 



The following table (p. 82) is used not only by Mr. 

 Loudon, but by the agricultural establishments of 

 Fellenberg, at Hofwyl, in Switzerland, at Moegelin, 

 in Prussia, and also by Prof Thouin. 



SECTION II. ADAPTATION OF SOILS. 



The choice of a suitable soil for the diff"erent 

 species of fruits is a matter of great importance. 



That which is adapted to the growth of the apple 

 difi"ers somewhat according to the variety. Yet we 

 find certain general qualities of the soil applicable 

 to all. Those lands which part with their moisture 

 readily are not suited to the growth of the apple, 



