Of Vegetation. jyj 



versa, if, when fuch a Grove of tall trees is 

 cut down, there be left here and there a fingle 

 tree, that tree will then (hoot out lateral 

 branches $ the leaves of which branches now 

 perfpiring freely, will attract plenty of fap, 

 on which account the top being deprived of 

 its nourishment, it ufually dies. 



And as trees in a Grove or Wood grow 

 only in length, becaufe all the nourifhmenc 

 is by the leaves drawn to the top, moft of 

 the fmall lateral (haded branches in the mean 

 time perifhing for want of perfpiration and 

 nutrition ; fo the cafe is the very fame in the 

 branches of a tree, which ufually making an 

 angle of about 45 degrees with the item of 

 the tree, do thereby beautifully fill up, at equal 

 and proper diftances, the fpace between the 

 lower branches and the top of the tree, form- 

 ing thereby, as it were, a parabolical Grove or 

 Thicket, which (hading the arms, the fmall 

 lateral moots of thofe arms ufually perifh for 

 want of due perfpiration ; and therefore the 

 arms continue naked like the bodies of trees 

 in a grove, all the nourishment being drawn 

 up to the tops of the feveral branches by the 

 leaves which are there expofed to the warm 

 fun, and free drying air, whereby the branches 

 of trees expand much. 



A a And 



