128 
The Vegetation ~ Book Uf. 
Tab. 28. 
29. 
22. 
25. 
Tab. 17. 
running from the Barque towards the Centre of the Root, and fo pal 
fing along betwixt the Aer-Vejéls 5 do hereby convey the Aery Pare 
of the Sup from the Barque, into the fame. 
7. $. Being thus received into the Aer-Vefels, and the Reception 
thereof, by the fame means continued; it is by them advanced into 
the Trunk. In which advance, it is again, more or lefs, disburfed in- 
to all the Parts of the Trunk, as it goes. Partly, inwards to the Pith, 
From whence, the Pith is always, at length, filled with Aer. Partly, 
into the Infertions ; by which it is conveyed outward into the Bargue. 
Wherein, it is in fome part, transfüfed through the Sap: and fo the 
reft, with part of the Sap, remitted, in per/pirations, back again in- 
to the Aer. 
8. $. So that, whereas the Diametral Portions in the Root, do 
ferve toconvey the Aer from the Sap in the Barque, into the Aer- 
Vefels, in the Wood: on the contrary, the Infértions here in the 
Trunk , ferve to convey the Aer from the Aer-Veffels in the Wood, into 
the Sap, in the Barque. Wherefore, asthe Acr-Veffels advance the Aer, 
or the Aery Part ofthe Sap, and fo convey it by the length of the Trunks 
fo the Infertions filter it, and convey it by the breadth. 
9. § AND that the Infertions have this Office or Subfervience 
unto both Kinds of Veféls; doth yet further appear, ifwe confider, 
That the Aer-Veféls are always fò poftured, ‘as to touch upon the faid 
Infertions, or at leaft to ftand very near them. For either they are 
large, and fo do frequently touch upon them on both fides; as in 
Elm, Afh, Wallnut, &c. Or if they are fmall ; then they either run 
along in even lines collateral and oftentimes contiguous with the faid 
Infertions, asin Holly : or at leaft, are reciprocally, fome on one fide, 
and fome on another, inclined to them; as in Apple. By all which 
means, the Aer is more readily conveyed from the Veféls into the In- 
fertions. i 
10. $. A further evidence hereof is this, That generally, the big- 
ger and the more numerous the der-Vifels be; the bigger, or at leaft, 
the more numerous alfo are the Infertions : Efpecially, if the compa- 
rifon bemade (as in all other cafes it ought to be, as well as here ) 
betwixt the feveral species of the fame Kind. So Cori», which hath 
fmall Aer-Vefels, hath alfo very fmall Infertions. But the Vine, hath 
both very large: and fo for others. 
11. Wherefore, the Infertions minifter betwixt the Aer-Vefels, and 
the Succiferons 3 inthe fame manner, as the Veficule of the Lungs, do 
betwixt the Bronchie and the Arteries. That is to fay, asin an Avimal, 
the Bronchie depofite the Aer into the Veffcule of the Lungs; which 
adminifter it to the Arteries: fo ina Plant, the Aer-Veffls depofit the 
Aer into the Infértions, that isinto the Veffeule of the Infertions ; by 
which it is gradually fltred off into the Barque and the Sap-Vefels 
therein. 
