Vegetable Statich . 141 
planted too deep in cold moift earth, as aP- 
fo 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 hinder 
perforation, whereby the fap is kept in 
too thin and crude a date $ in all thefe cafes 
little or no fruit is produced. 
Hence alfo, in moderately dry fummers, 
ceteris paribus , there is ufually greateft plen- 
ty of fruit $ becaufe the fap in the bear- 
ing twigs and buds is more digefted, and 
brought to a better confidence, for fhoot- 
ing out with vigour and firmnefs, than it is 
in cool moift fummers: And this obferva- 
tion has been verified in the years 1723, 
1724, and 1725, See an account of them 
under it, Exp. 20 . 
But to return to the fubjefl: of the mo- 
tion of the fap 5 when the fap has firft palled 
thro* that thick and fine drainer, the bark of 
the root, we then find it in greateft quanti- 
ties, in the moft lax part, between the bark 
and wood, and that the fame thro* the whole 
tree. And if in the early fpring, the Oak 
and feveral other trees were to be examined 
near the top and bottom, when the fap firft 
begins 
