^o ESSAYS AND OBSERVATIONS 



chalk, which is otherways very folid, 

 filled with this fand. They have alfo 

 clay-lands ; and, when any c mfiderable 

 quantity of chalk is mixed with it, they 

 give it the name of clay-marle, and efteem 

 it the beft for the improvement ot light 

 land. 



What they call craggy is no other 

 than banks of fea fliells, though they are 

 now and then found at a coniiderable 

 dirtance from the prefcnt fhore ; it is a 

 very valuable manure, and highly e-» 

 {teemed. 



It would fpend too much of the Socie- 

 ty's time, to mention the nature of the 

 foils in the neighbouring counties, where 

 the fame practice is followed, and where 

 they have alfo very (lifF clays, all plough- 

 ed in the fame way, never going above 

 three inches deep, and feldom above two 

 and a half, whatever be the foil or in-* 

 tended crop. 



Th e reafons that the farmers and gen-i- 

 tlemen give, are, 



That land turned up with a fhallow 

 furrow will produce an equal or better 

 crop than when ploughed deep, even 



though 



