f the for-" 
uities 5 or 
r, they are 
hed out ) 
Book IL of Trunks. 
115 
and dryed intoa Skin: even as the very Skin of an Adder, upon the 
gradual generation of a new one underneath, in time,becomes a slough. 
The inmolt portion of the Bargue, is annually diftributed and added to 
the Wood : the Parenchymous Part thereof making a new addition to 
the Infertions within the Wood ; and the Lympheduéts a new addition 
to the Lignous pieces betwixt which the Infertions ftand. So that a 
Ring of Lympheduds in the Barque this year, will be a Ring of Wood 
the next; and fo another Ring of Lympheduéts,and of Wood, fucceflive- 
ly, from year to year. So the Table, for an Apple-Branch, Meweth a 
quarter of a Slice of a Branch cut tranfverfly, of Three years growth : 
That of Barbery, of Two 5 That of Sumach, of One only 5 That of 
Elm, of Five, 
12. $. Hereby twothingsmaybe the better noted. Firft, the dif- 
ference betwixt the degrees of the annual growths of everal Trees: three 
Tab. 25. 
24,34, 28: 
years growth in an Oak, being as thick as five in an £/». Secondly, 24: 333 
the difference betwixt the Azanal growths of the fame Tree 5 being 
not ofa conftant proportion,but varying in thicknefs, as it fhould feem, 
according to the jeafon of the year: whereby it may appear, what 
Seafon, or kind of year, doth moft of all favour, the latitudinal growth, 
or the thickening of any Tree. E 
13. $. The Lympheduöfs thus antiquated or turned into Wood, do 
rarely,if ever, Bleed: butonly tranímit a kind of Demy or Vaporous Sap. 
And fome of them, as in the Heart of fome Trees, it is probable, That 
they tranfmit not any Sap, either in the form ofa Liquor, or a Vapour: 
and fo being gradually deprived of their Watery Parts,become the Heart. 
14. $. There is this further variety in the Wood; reprefented in 
Walnut, Fig and Oak. That fome certain parcels hereof, make either 
feveral fmall and white Rings, as in Oak; or elfe diverswhite and crook- 
ed Parcels, tranfverfe to the Infertions, asin Wallautand Fig. For it 
feemeth, that,at leaft,in'many Trees,fome portion of all the Kinds of Vefe 
28. 
Tab. 30; 
felsin the Barque, are not only annually diltributed to the Wood, but 3° 33° 
do likewife therein retain the fame, or fomewhat like Pofition, which 
they originally had inthe Bargue. So that asallthofe bigger aud dark- 
er Portions of the Wood, were originally, the Radiated Lymphadutts of 
the Barque: fo the little white Circles, or Parcels of Circles, in the fame 
Wood, were originally another fort of Sap-Veffels in the Barque, fe. 
thofe which have a circular Pofition therein. 
15. $. Inthe Branches of Fir, Pine, and others of the fame Kindred, 
there are fome few Turpentine-Veffels {catered up and down the Wood Tab; 33: 
and reprefented by the larger Black Spots. Which Vefels are eadem nu- 
mero, the felf fame, which did once appertain to the Barque; and do 
even here alfo in the Wood, contain and yield a liquid Turpentine. 
aly, being pinched up by the Wood, they are become much fmaller 
pes. 
16.6. THE 4er-Veffels, with the Infertions, and true Wood, altos 
gether make up That, which is commonly called, The Wood ofa Tree. 
The Aer-Vefels 1 fo call, not in that they never contain any Liquor 3 
but, becaufe all the principal time of the growth of a Plani; when the 
Vefels of the Barque are filled with Liquor, thefe are filled only with a 
Vegetable Aer. 
17. $. In almoft all Plants, not one in fome hundreds excepted, 
this is proper tothe Aer-Veffels ; To have a much more ample Bore cr Ca: 
E vity; 
