ir. YORKSHIRE. 99 



of faintfoin ; in proportion, it is faid, to 

 the depth of the foil ; that is, the depth be- 

 tween the furface of the foil and the rock ; 

 lading twenty years, more or lefs, according 

 to the depth of the land. 



One hundred grains of the natural foil 

 (taken from the fide of the lane between 

 Brompton and Sawdon) yields three grains of 

 calcareous matter. 



One hundred grains of the fubfoil of an ad- 

 joining inclofure, taken from the top of a 

 loofe mixt-ftone rock, at about eighteen 

 inches deep, affords fourteen grains of cal- 

 careous earth. 



The iimeflone is of a nature between that of 

 Malton and that of Pickering (See Art. 

 MANURE), namely, a granate of a middle 

 Duality as to hardnefs. 



The redjlone is of a fingular nature ; being 

 intermixed with calcareous granules, exactly 

 fimilar to thofe of the fofteft of the Malton 

 limeftone. One hundred grains of this red- 

 ftone, collected among the foil above analized, 

 yields thirteen grains of calcareous matter. 

 The flone in this cafe porous ; fufficiently 

 H 2 open 



