Of Vegetation. 333 



tended to their full length. And we may 

 eafily conceive how the longitudinal capil- 

 lary tubes ftill retain their hollownefs, not- 

 withstanding their being diftended, from the 

 like effecl: in melted glafs tubes, which re- 

 tain a hollownefs, tho' drawn out to the 

 fined thread. 



The whole progrefs of the firft joynt r 

 is very fhort in comparifon of the other 

 joynts $ becaufe, at firft fetting out its leaves 

 being very fmall, and the feafon then cooler 

 than afterwards ; 'tis probable, that but lit- 

 tle fap is conveyed to it, and therefore it ex- 

 tending but (lowly, its fibres are in the 

 mean time grown tough and hard, before 

 it can arrive to any confiderable length. 

 But as the feafon advances, and the leaves 

 inlarge, greater plenty of nourifhment be- 

 ing thereby conveyed, the fecond joynt 

 grows longer than the firft, and the 3d and 

 4th ftill on gradually longer than the pre- 

 ceding; thefe do therefore in equal times 

 make greater advances than the former. 



The wetter the feafon, the longer and 

 larger fhoots do vegetables ufually make 5 

 becaufe their foft duftile parts do then con- 

 tinue longer in a moift, tender ftate 5 but 



la 



