202 Of the Management^ and 

 dry, husky a Nature, and in a hot degree 

 porous enough to aflame it, contain any 

 quantity of Nitre or Sulphur from the Air, 

 Rain, d^c. any more than what is inherent 

 in its own Nature. Thi?, then, is certainly 

 the EfFeft of all calcin'd V^egetables, namely a 

 fiery Heat and Fermentation, which fets the 

 Ground to Work on the approach of Wet, by 

 a fubtle Infinuation, unlocking thofe furly 

 Clods, and quickening the Sluggiihnefs of thb 

 Earth, it being a well-known and eftablifh'd 

 Maxim amongft the Narurahfts, Th.it all Fer- 

 mentation (which like a Spring in Mechanifm, 

 fets the whole Scene of Nature at Work) is 

 tans'' d by the Interpofition or Mixture of Bodies 

 cf different Qualities one with another. 'Tis 

 thus that Sand mik*d with Clay does well, et 

 pecially where it is impregnated with faline 

 Qualities : And 'tis thus that Coal A(hes work 

 there (b admirable Effeft in loofening and 

 mouldring ftifF Clay, and, as we comm.on- 

 ly term it, making Ruff, and Albey, or Sandy- 

 like. And *tis alfo certain, that thofe Im- 

 provements are better or worft, as they 

 abound more or lefs with this Nitrous and 

 Spirituous Matter, which Coal Afhes, and 

 next to it, the Afhes of Vegetables do more 

 than others 5 and 'tis this from which all 

 Husbandmen may judge of the Quantity that 

 is proper for an Acre of Land, or for any 

 Quantity more or lefs. 



SECTION 

 f 



