102 [CULTIVATED GRASSES. IT. 



over) but in a ftratum of flill paler clay ; 

 fome three or four inches thick : a proof 

 that it had here met with a foil fuitable 

 to its nature ; only one of its rootlets ^not 

 thicker than a flem of rye-grafs) having at- 

 tempted to go lower. 



In telling the feveral ftrata, I find that the 

 three feams of clay, alone, difcover fymptoms 

 of calcareofity. Neither the top-foil ; nqr 

 any of the intervening flrata, appear to, 

 contain any thing of a calcareous nature j 

 except fome fragments of hard limeftone 

 which mix more or lefs with the whole. 



One hundred grains of the uppermoft feam 

 of clay yield feven grains and a half of cal- 

 careous matter : one hundred of the middle- 

 moil, twenty-three and a half grains : one 

 hundred of the loweft ftratum , the main field 

 of pafturage, twenty-nine grains. 



GENERAL OBSERVATIONS. From the fum 

 of this evidence, and from every part of it, it 

 appears, demonflrably, that SAINTFOIN de- 

 lights in CALCAREOUS EARTH. And we may 

 almoft infer, with equal certainty, that it will 

 not fiourijh in a fituation where both the foil 

 and the fubftrata arc deftitute of calcareofity. 



In 



