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LETTER XXXI. 



Throughout the minutes of this 

 journey you certainly remarked the 

 conftant attention I gave to the courfes of 

 crops, a part of rural management which 

 is certainly of uncommon importance, 

 fince all advantages of rent, foil, manure, 

 &c. are of little avail, if the farmer does 

 not crop his land with judgment. But in 

 making this review, there are fome diffi- 

 culties which I am not clear in my ideas 

 of removing : Something more is requiiite 

 than a mere detail of courfes ; they muft 

 be thrown into different divifions, accord- 

 ing to their natures, and inferted diftinctly 

 with the crops, that we may difcover how 

 far the latter are dependent on the former. 

 But thefe courfes vary ad infiiitum, fo that 

 it would be impoffible to aflign a divifion 

 to each, for which reafon they muft be 

 Amplified, by reducing them into claffes 

 according to their merit. The only proper 

 diftinction that, at prefent, occurs to me* 

 is the number of crops to a fallow : But 

 then the ameliorating ones, or fallow crops, 

 muft be efteemed as fallows; in which 



there 



