Book L of Plants. 21 
13. $: Thef Infertiöns :are likewife very confpicuous in Sawing 
of Trees length-ways into Boards, and thofe plain d, and wrought in- 
to Leaves for Tables, Wainfcot, Trenchers, and the like. In all which, 
as in courfè Trenchers made of Beech, and Tables of Oak , there are Ta 
many parts which have a greater fmoothnefs than the reft; and aré fo re 
many inferted Pieces of the Cortical Body; which being by thofe of a 
the Lignous, frequently. intercepted, féem to be difcontinuons, al- 
though in the Tivvk they are really extended, in contiñued Plates, 
throughout its Breadth., eh RR 
14. $. Thef Infertions, although as is faid; of a quite difting 
fübftance from the Ligzoris 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 interwoven together, they Fabia. piri 
thus conftitute one {trong and firmly coherent Body; ás the Timber ** y 
of any Tree. Ñ 
15. $. Asthe Pores or Veflels are greater or left, fo are the In: 
Sertions alfo: 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: Ímáll, diftingtly apparent, asin a tranfverfe 
piece of Oak, 
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 regref And their non- 
exiftence is enough. evident, from what inthe firft Chapter we have C 1 $. 42. 
faid of the Lobes of the seed: in whofe seminal Root, were there any 
Valves, it could not be, that by a contrary Conife of the Sup, they 
fhould ever grows which yet, where-ever they turn into Diffimiler 
Leaves, they do, Or if we confider the growth of the Root, which 
oftentimes is upward and downward both at once. And being cut 
tranfverfly, will bleed, both the fame ways, with equal freedom. 
17. $. The Infertions here in the Trinh give us likéwife a fight 
of the pofition of their Pores. For in a plained piece’ of Oak, as 
in Wainjeot, Tables, Gc. befides the larger Pores of the Lignows Body, 
Which run by the length of the Trunk 5 the Trad? likewife of thofe of Tab.3-f.2. 
the Infertions may be obferved tobe made by the breadth, and fo di- 
rectly croß.. Nor are they continuous'as thot of the Lignons Body, 
but very fhort, as thofe both: of the Cortical Body and Pith, with 
which the Infertions, as to their fubltance, are congenerous. Yet they 
all ftand fo together, as to be plainly ranked in even Lines or Rows 
throughout the breadth-of the Trunk: As the Trač of thofe Pores 
appears to the naked Eye, fee in Tab. 3) F) 7g. 9. The Pores themfelves 
may be feen in the Root of a Pine deferibed and figured’ in the Second 
Book., asiti appears through a good Microfcope. Tab. 17 
18. $. The Pores of the Pith likewife being larger here in the 
Trunk, are better obfervable than in the Root: the width whereof, 
1n comparifon with their sides fo exquifitely thin, may by an Hony- 
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 skins by which they. 
are bounded, or of which they confift, would feem to be confidera- 
bly 
Tab. 3, F 7. 
