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Tab. 3.f: 2. 
CO 3. 
Micrography. 
C.2.8. 8, 
Tab. 3. f: 7. 
Fab. 3. f.6, 
7. §. From thefe Annual younger Fibers it is, that although the 
Cortical Body and Pith are both of the fame fubftantial nature, and 
their Pores little different 5 yet whereas the Pith, which the firft year 
isgreen, and ofall the Parts the fulleft of sap, becomes afterwards 
white and dry: The Cortical Body, on the contrary, fo long as the 
Tree grows, ever keepeth green and moift, /¢. becaufé the faid Sap-Fi- 
bers, annually grow therein, and fo communicate with it. 
8. §. The Pores likewife of the Liguous Body, many of them, 
in well-grown Timber, as in Oaken boards, are very confpicuous, 
in cutting both lengthwife and traverfe. They very feldom, if ever, 
run one into another, but keep, like fo many feveral Ve/els, all along 
diftin& ; as by cutting, and {o following any one of them as fat as 
you pleafe, fora Foot or half a Yard, of more together, may be ob- 
ferv’d, And fo, the like, in any Cane. . 
9g. §. Befides thefe, there are a leffer fort; which, by the help 
only of a good Speéfacle Glafs may be obferv'd. 
to. §. And thefe are all the Pores vifible without a Micro/éope. 
The ufe of which, excepting in fome few particulars, I have pur- 
pofely omitted in this firft Book. Mr. Hook fheweth us, befides thefe, 
a third, and yet finaller Sort; and (asa confirmation of what, in 
the Second Chapter, 1 have faid of the Pores of the Lignous Body 
in general) that they are all continuous and prolonged by the length 
of the Trank, asare the greater ones: whereof he maketh Experi- 
ment, by filling up, in a piece of Char-coal, all the {aid Fores with 
Mercury : which appears to pafg quite through them, in that by a 
very good Glaf it is vifible in their Orifices at both ends; and with- 
out a Glas, by the weight of the Coal alone, is alfo manifeft. All 
thefe I have feen, with the help of a good Microfcope, in feveral 
forts of Woods. Asthey all appeare in a piece of Oak, cut trant- 
verfely, See Tab. 3. : 
’ 11. §. Upon further Enquiry, I likewife find, That the Pores 
of the Lignous Body in the Truzks of Herbs, which at firft I only fup- 
pofed, by the help of good Gluffes, are very fairly vifible: each Fi. 
bre being fometimes perforated by 30, 50, 100, or hundreds of Pores, 
Or what I think is the trueft notion of them, That each F ibre, though 
it {cem to the bare eye to be but ove, yet is, indeed, a great number 
of Fibres together 5 and every Pore,being not meerly a fpace betwixt 
the feveral parts of the Wood, but the Concave of a Fiber.’ So that 
if it be asked, what all that Part ofa Plzat, cither Herb or Tree, which 
is properly called the Woody-Part 5 what all that is, I fuppofe, That 
it 1s nothing elfe but a Clyfer of innumerable and moft extraordinay 
fmall Veffels or Concave Fibers: as ina Slice of the Trunk of Bur- 
dock is apparent. 
12. §. Next the Infértions of the Cortical Body, which in the 
Trunk, of a Treefaw'd athawrt, are plainly difcerned as they run 
from the Circumference toward the Center; the whole Body ‘of 
‘the Tree being vifibly compounded of two diftinG: Subftances, that of 
Tab. Bie 5° 
& 8. 
the feveral Rings, and that of the Infértions, running crofs5 fhewin 
that in fome refemblance in a Plain, which the Lines of Latitude and 
of the Meridian doin a Globe. The entrance of the Infertions into 
the Wood, is alfo, upon {triping off the Barque, very apparent; as 
in the fame Fig. 8. 
#3. §. 

