fz SOI L s: 4: 



fifes to near the furfacc, but fcldoiii fo high 

 is thc^^;?. 



Ti^is fccms to be urlverfally ccnfidered a?: 

 a diftinfl fomething, poifonous in its nature, 

 and partaiving heither of the foil nor the fub- 

 foil. It is not my intention to ridicule this 

 received opinion; it may be welt founded; 

 but J to me, tne pan appcrars to be a pro- 

 dudlion not of nature, but of art ; or, to" 

 fpeak more accurately, a confe(juence of the 

 Norfolk culture carried on, time im.mem.orial, 

 with the Norfolk plow ;— whole broad flat 

 fhare being held in'-aiiably in a horizontal 

 pofirion, and (unlefs in fallowing) invari- 

 ably at the fame depth, the furface of the 

 fubfoil becomes formed, by the action of the 

 iliare, the prcffure and llidinp- of the heel of 

 the plow, and the trampling of the horfc, into 

 a firm, even floor, upon which che foil is turned, 

 and re-turned, in the fame manner p would 

 be, if fprcad on a floor of flone, or other 

 material. 



But be this as it may, an^d whether the pan 

 be a natural or a fadtitious produ£lion,-— it is 

 a fadt well eftabliflied, tliat breaking it up 

 by plowing below the accufiomed depth, is 

 vtry injurious to luccceding crops. 



Two 



