Of f^eget niton. 3 1 p 
which is fuperior to vaft comprcfling forces 5 
and it is by the infinite combinations, aftion 
and re*aaion of thefe principles, that all 
the operations ia animal and vegetable 
bodies are effefted. 
Thefe adive aereal particles are very fer- 
viceable in carrying on the work of vegeta- 
tion to its perfedion and maturity. Not 
only in helping by their clafticity to diftend 
each dudile part, but alfo by enlivening and 
invigorating their fap, where mixing with 
the other mutually attrading principles they 
are by gentle heat and motion fet at liberty 
to aflimilatc into the nourifhment of the re- 
fpedive parts : The foft and moift nourifh' 
ment eafily changing its texture by gentle 
heat and motion, which congregates 
homogeneal bodies, and feparates hete- 
rogeneal ones.*’ Newtons OptickSy qu. 
3 1 . The fum of the attrading power of thefe 
mutually ading and re-ading principles 
being, while in this nutritive ftate, fuperior 
to the fum of their repelling power, where- 
by the work of nutrition is gradually advanc- 
ed by the nearer and nearer union oT thefe 
principles, from a lefler to a greater degree 
of confiftency, till they are advanced to that 
vifdd 
