Of Vegetation. 3 27 
Animals, but depend wholly on the alter- 
nate changes from hot to cold, for infpi- 
ration, and vicesverfa for expiration 3 and 'tis 
not improbable, that plants of more rich 
and racy juices may imbibe and aftimilate 
more of this aereal food into their conftitu- 
tions, than others, which have more vvatry 
vapid juices. We may look upon the 
Vine as a good inftance of this, which in 
Exper. 3. perfpired lefs than the Apple- 
tree. For as it delights not in drawing 
much watry nourifiiment from the earth by 
its roots, fo it mull therefore neceffarily be 
brought to a more ftrongly imbibing flare at 
night, than other trees, which abound 
more with watry nourifiiment 3 and it will 
therefore confequently imbibe more from 
the air. And likely this may be the reafon, 
why plants in hot countries abound more 
with fine aromatick principles, than the 
more northern plants, for they do undoubt- 
edly imbibe more dew. 
And if this conjecture be right, then it 
gives us a farther reafon, why trees which 
abound with moifture, either from too 
fhaded a pofition, or a too luxurious flare 
are unfruitful, *viz. becaufe, being in thefe 
cafes more replete with moifture, they can* 
Y 4 not 
