PHYSICAL AND LITERARY. 77 



fufficient to overbalance the advantages of 

 a deep ftaple. 



As to the fourth reafon, I deny that 

 weeds can be bed cleared by fhallow 

 ploughing. On the contrary, as above 

 hinted, I do not find it pradlicable to 

 clear the ground of weeds without deep 

 ploughing. 



As to the fifth: Manure that falls to 

 the bottom, is no doubt eafieft brought 

 up where the ftaple is fhallow. But 

 that very fuppofition, if it hold in fadl, 

 muft neceffarily introduce deep plough- 

 ing. For manure that hath fubfided to 

 the bottom of the ftaple cannot be brought 

 up without going under it, and enter- 

 ing upon the hard ground below j and 

 this operation two or three times renew- 

 ed muft produce deep ploughing. 



The reafon /^z/? urged is, That fhal- 

 low ploughing brings an early crop. 

 One thing I know, that the weakeft crop 

 is always the earlieft. If fhallow plough- 

 ing bring both an early and plentiful 

 crop, this muft be acknowledged a great 

 property. But I muft take the liberty 



Xo 



