fS4 M A N U R E - P R O C E S S. 21, 



It Is known, from common experience, that 

 land which has been recently marled receives 

 no apparent benefit from a fecond drefllng of 

 the fame manure : but it is equally well known 

 that, after fome length of time has elapfed, a 

 repetition of marling will generally anfwer. 



It is a notion, pretty generally adopted, 

 that, in this cafe, the quintity ought to be 

 greater than it was the firfl or preceding time : 

 and it being formerly the praftice to fet on 

 a great quantity at once,-— feldom, perhaps^ 

 lefs than forty loads an acre, — this notion has, 

 probably, deterred many perfons from doing 

 that which would have been ferviceable to 

 themfclves and their country. 



But there is not, I believe, any general rule 

 known, refpecfling either lime or quantity : I 

 have had frequent opportunities of making 

 obfervations on a farm which affbrds a Ibiking 

 inftance en this fubjedt. Tv/o or three different 

 tenants had failed fucceffively on this farm; 

 though by no means high-rented. The greateft 

 part of it had, within the memory of man,- 

 been marled with not lefs, in all human pro- 

 bability, than forty loads an acre; and the 

 tenants who failed defnaired of reaping any 

 bpneftt from a fecond marling after fp llioit 



