Vegetable Statich. 141 



too deep in cold moift earth, as alfo of too 

 luxuriant Peach and other walTtrees; or, 

 which comes almoft to the fame, where 

 the fap cannot be perfpired off in a due pro- 

 portion \ as in orchards, where trees (land too 

 near each other, fo as to hinder perfpiration, 

 whereby the fap is kept in too thin and crude 

 a (late -, in all thefe cafes little or no fruit is 

 produced. 



Hence alfo, in moderately dry fummers, 

 ceteris paribus , there is ufually greateft plenty 

 of fruit ; becaufe the fap in the bearing 

 twigs and buds is more digefted, and brought 

 to a better confidence, for mooting out 

 with vigour and firmnefs, than it is in 

 cool moid fummers : And this obfervation 

 has been verified in the years 1723, 1724, 

 and 1725. See an account of them under 

 it, Exper. 20. 



But to return to the fubjecT: of the mo- 

 tion of the fap: When the fap has firft pafied 

 thro' that thick and fine ftrainer, the bark 

 of the root, we then find it in greateft quan- 

 tities, 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 



