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Tab. 28. 
29. 
22. 
25. 
Tab. 17. 

The Vegetation Book III. 
running from the Barque towards the Centre of the Root, and fo paf- 
fing along betwixt the Aer-Veffels ; do hereby convey the Aery Part 
of the Sup from the Burque, into the fame. 
7. g. Being thus received into the Aer-Vefels, and the Reception 
thereof, by the fame means continueds it is by them advanced into 
the Truvk, 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 Bargque. 
Wherein, it is in fome part, transfufed through the Sap: and fo the 
reft, with part of the Sap) remitted, in perfpirations, 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 Bargue, into the Aer- 
Veffels, in the Wood: on the ‘contrary, the Inféertions here in the 
Trunk, ferve to convey the Aer from the Aer-Feffels in the Wood, into 
the Sap, in the Barque. Wherefore, asthe Aer-Veffels advance the Aer, 
or the Aery Part ofthe Sap, and fo convey it by the /ength of the Trunks 
fo the Ixfertions filter it, and convey it by the breadth. 
. AND that the Ixfertions have this Office or Subfervience 
unto both Kinds of Vefféls; doth yet further appear, if we confider, 
That the Aer-Vefféls are always fo 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 
Ela, Afh, Walleut, &c. Orifthey are {mall 5 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 thems; asin Apple. By all which 
means, the Aer is more readily conveyed from the Vefels into the In- 
Jertions. 
ro. g. _ A further evidence hereof is this, That generally, the big- 
ger and the more numerous the Aer-Veffels be; the bigger, or at leaft, 
the more numerous alfo are the Ixfértions : Efpecially, if the compa- 
rifon be made (as in all other cafes it ought to be, as well as here } 
betwixt the feveral species of the fame Kiud. So Corin, which hath 
{mall Aer-Veffels, hath alfo very fmall Infertions. But the Vine, hath 
both very large: and fo for others. 
11. Wherefore, the Infertions minifter betwixt the Acr-Veffels, and 
the Suecferous 5 inthe fame manner, as the Veficule of the Lugs, do 
betwixt the Bronchie and the Arteries. That is to fay, as in an Avimal, 
the Bronchie depofite the Aer into the Veficule of the Lungs ; which 
adminifter it to the Arteries: fo ina Plant, the Aer-Veffels depofit the 
Aer into the Infertions, that isinto the Veficule of the Infertions ; by 
which it is gradually fvtred off into the Barque and the Sap-Veffels 
therein. 

