Chap,.^-' of Nature in Vegetation. 177 



Ground is in Hearty (as the Farmers fpeak : ) 

 But in a fdw Tears 'twill produce no ?iwre^ if 

 lowed with that Corn, Some other Grain indeed 

 it may^ as Barley : And after this has been fown 

 fo often that the Land can bring forth no more 

 of the fame 5 it may afterwards yield good 

 Oats^ and perhaps Veafe after them. At 

 length 'twill become harren ^ the Vegetative 

 Matter that at firft it abounded withal, being 

 educed forth of it by thofe fuccejfive Crops^ 

 and molt of it borne of. Each Jort oi Grain 

 takes forth that peculiar Matter that is proper 

 for its ovim Nourijlment. Firft, the t^^heat 

 draws off thofe Particles that fuit the Body 

 of that Plant 5 the reft lying all quiet and 

 2indiJlurVd the while. And when the Earth 

 has yielded up all them, thofe that are pro- 

 per for Barley^ a different Grain^ remain 

 Jim behind, 'till the fuccejfive Crops of that 

 Corn fetch them forth too. And fo the Oats^ 

 and Peafe^ in their turn ^ 'till, in fine, all is 

 carried off and the Earth, in great meafure, 

 drai7i^d of that fort of Matter. 



After all which, that very TraEt of Land 

 may be brought to produce another Series of 

 the fame Vegetables ^ but never *till 'tis fup- 

 plied with a new Fund of Matter, of like fort 

 y/ith that it at firft contain d. This S'K^jt^/y 

 is made fever al ways 5 by the Ground's lying 

 Fallow for fome time, 'till the Rain has 

 pour'd down a frefl) Stock upon it, or by the 

 Tiller^ Care in Manurmg of it. And for 

 farther Evidence that this Supply is in reality 

 Vol. I, N of 



