[l84] 



of what 1 intended at leaft, to write there- 

 on. 



Still before I go about formally to 

 fhew, what human mechanifm is propereft 

 to prom-ote a kindly acceleration of the 

 growth of thefe no indocile plants ; it is con- 

 venient firft to difcufs further fome points on 

 the nature of vegeiatio?i ; with refped: to 

 fuch of the elements more particularly con- 

 cerned therein : Whereon it is to be noted, 

 that with the utmoft art, the grandeft Oaks 

 are not to be made the produce of all foils 

 indifcriminately. 



For vain is any fuch hope in foils 

 whofe underftrata's are a dry, £harp gravel 

 — Or barren fand — Or very rocky — Or that 

 are an unmixt chalk — Or impenetrably ftiff 

 and folid, and withal poor and jejune — 

 Which is ufually the cafe of the latter ; fo 

 as hardly to admit entrance, to the longeft 

 autumnal rains ; by reafon of the almoft 

 lapideal continuity of their parts. 



Now, in the former foils, there is no 

 moifture left, before half the fummer, or- 

 dinarily, is out: For in fuch, the water 



coming 



