But to return to my notes concerning 

 Barbadoes ! I have before remarked to you the 

 principal variations of its foil: — near Bridge- 

 town it is of rich black earth, moftly fpread on 

 abafe of calcareous rock, formed of madripores, 

 and other marine concretions : in fome dif- 

 tri&s it is of a red earth, of greater depth, but 

 lefs rich : in others the foil is of a light whit- 

 Hfc earth, broken into a grey-looking mould, 

 or hardened into lumps refembling chalk — but 

 a&ually confiding of indurated argille, bleach- 

 ed by expofure to the weather, 



From this variety in the foil, together 

 with that which attaches to fituation, as being 

 flat, or mountainous,— protected, or expofed, 

 it will necefiarily happen, that the produce 

 will differ in different parts of the ifland : and 

 as the whole has been long under cultivation, 

 it is manifeft that if a fupply of manure, pro- 

 portionate to the crops obtained, cannot be 

 procured, a degree of exhauftion, bearing a cer- 

 tain ratio to the deficiency-, muft refult. 



It is eftablifhed, from the mode of agri- 

 culture adopted in fome counties of England, 

 that^ by an adequate fopply of manure, land 



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