C S6 J 
deep ploughing. It is perfedlly well known 
that some of the best corn distridfs in Eng- 
land do not consist of five inches of staple 
soil. If you touch any thing below that you 
^ bring up a determined enemy, break your party 
and render your land wholly unprodu6five. 
Deep ploughing can never answer but upon 
very deep staples, and even there the expe- 
riment of ploughing deep for one crop, and 
. shallow for another, would still be a means 
of breaking your pan, and putting your soil 
into tlie condition of a cullender,' where 
moisture, manure, mucilage, and all food 
for plants would sink below your reach. 
Very deep ploughing, even in a constant 
equal depth, in good soils, is generally more 
prejudicial to a farmer than the other extreme, 
because more than half his most valuable 
produdfions will thrive best when the seed 
and its subsequent roots lie near the surface, 
which, where habits of deep ploughing are 
generally adopted, are too much buried : 
besides, the more soil you have in adfion, the 
