
ee I 
Book I. of Plants. 21 

13.§. Thefe Iufertions are likewife very confpicuous in Sawing 
of Trees length-ways into Boards, and thofe plain‘d, and wrought in- 
to Leaves for Tables, Wainfeot, Trenchers, andthe like. In all which, 
as incourfe Tienchers made of Beech, and Tables of Oak , there are aut 
many parts which have a greater fmoothnefg than the reft; and are fo 2% 3-f. 2. 
many zuerted Pieces of the Cortical Body which being by thofe of © Tabtefit. 
the Lignous, frequently intercepted, feem to be difcontinuons, al- 
though in the Trw#k they are really extended, in continued Plates, 
throughout its Breadth, 
14. §. Thefe Infertions, although as is faid, of a quite difting 
fubftance from the Ligwos Body; and fo no where truly incorporated 
with it, yet being they are in all parts, the one as the Warp, the 
other as the Woof, mutually braced and ixtermoven together, the 
thus conftitute one {trong and firmly coherent Body 5 as the Timbe 
of any Tree. 
15. §. Asthe Pores or Veffels are greater or Jefs; {0 are the Iv- 
Jertions a\fo : To the bare eye ufually the greater only are difcerna- 
ble: But through an indifferent Microfcope there are others alfo, much 
more both numerous and f{mall, diftinétly apparent, asin a tranfverfe 
piece of Oak, Tab. 3+ fr 7 
16. §. In none of all the Pores can we obferve any thing which 
may have the true nature and ufe of Valves, which is, Eafily to admit 
that, to which they will by no means allow a regrefs. And their non- 
exiftence is enough evident, from what’ in the firlt Chapter we have C 1S. 42. 
faid of the Lobes of the seed: in whofe Seminal Root, were there any 
Valves, it could not be, that by a contrary Courjé of the Sap; they 
fhould ever grows which yet, where-ever they turn into Diffimilar 
Leaves, they do. Or if we confider the growth of the Root, which 
oftentimes is upward and downward both at once. And being cut 
tran{verfely, will bleed, both the fame ways, with equal freedom, 
17. §- The Infertions here in the Trunk give us likewile a fight 
of the pofition of their Pores. For in a plained piece of Ozk, as 
in Wainfeot, Tables, @c. befides the larger Pores of the Lignous Body, 
which run by the length of the Trumk 5 the Traé likewife of thofe of Tab.3.f.2- 
the Infertions may be obferved to be made by the breadth, and fo di- 
reCtly crofs. Nor arethey continuous as thofe of the Ligzous Body, 
but very fhort, as thofe both of the Cortical Body and Pith, with 
which the Infertiows, as to their fubftance, are congenerous. Yet they 
all ftand fo together, as to be plainly ranked in even Lives or Rows 
throughout the breadth of the Tiwwk : As the Traé of thofe Pores 
appears to the naked Eye, fee in Tub. 3. Fig. 9. The Pores themfelves 
may be feen in the Root of a Vine defcribed and figured in the Second 
Book, as it appears through a good Microjcope. Tab. 17. 
18. §. The Pores of the Pith likewife being larger here in the 
Trunk, are better obfervable than in the Root: the wideh whereof, 
in comparifon with their sides fo exquifitely thin, may by an Hozy- 
Comb ‘be grofly exemplified ; and is that alfo which the vaft difpropor- 
tion betwixt the Bulk and Weight of a dry Pith doth enough de- 
clare.. In the Trunks of fome Plants, they are fo ample and tranf- 
parent, that in cutting both by the length and breadth of the Pith, 
fome of them through the tranfparency of the shizs by which they 
are bounded, or of which they confift, would fem to be aura 
ly 
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