134 Vegetable Statkks. 
it promotes their growth, yet retards their 
coming to maturity. And for the fame 
reafon, the uncovering the roots of trees 
for fome time, will make the fruit be confi- 
derally the forwarder. 
And on the other hand, where trees a- 
bound with too great a plenty of frefli drawn 
fap, as is the cafe of trees whofe roots are 
planted too deep in cold moift earth , as 
alfo of too luxuriant Peach and other 
Wall trees 5 or which comes almoft to the 
fame, where the fap cannot be perfpired off 
in a due proportion , as in Orchards, where 
trees ftand too near each other, fo as to hin- 
der perfpiration, whereby the fap is kept in 
too thin and crude a ftate j in all thefe cafes 
little or no fruit is produced. 
Hence alfo in moderately dry fummers, 
CiCteris paribus-, there is ufually greateft plenty 
of fruit i becaufe the fap in the bearing 
twigs and buds is more digefted, and brought 
to a better confiftence, for fhooting out with 
vigour and firmnefs, than it is in cool moift 
fummers : And this obfervation has been 
verified in the years 1723^ 1724? and 1725. 
See an account of them under it. Exp, 20. 
But 
