
























































‘The Anatomy OM 4 Book IT. 
REESE lan ae ete ere es 
(a) See 
Book 3. 
an Inch or two Inches in length. This Wool being nothing elfe, but a 
certain number of Fibres Refolved from their Spiral pofition in thefe 
Veffels, and Drawn out in Length 5 and focluftred together,as fo many 
Threds or little Ropes: appearing thus more or lefs, in the Leaves and 
fome other Parts of moft Plants but more remarquably in fome, as 
in the Vive, Scabious, and others. As alfo in the Scales of a Squil/. In 
which laft, for example, they are fo eafily feparable, as further to 
fhew, what before was obferved ; wiz. That the Plate or Zone, into 
which the Aer-Veffels are ufually Refolved, isnot one Single Piece, or 
meer Plate ; but made up of feveral Round Fibres, all ftanding and 
running parallel, and fo knit together by other fmaller ones, tranf- 
verfly, in the form of a Zoze. For if you break or cut a Leaf or shell 
of a freth Squil, till you come to the Aer-Veffels, and having fofily 
drawn them out, for about an Inch or more (to the naked Eye) in 
length, you then fingle out one or two of them from the reft, and 
rowl them, as they hang at the She//, eight or nine times round, each 
Vefel will appear, through a Glas, to confift of 8, 10, or 12 {mall 
Fibres; which, in the Unrefolved Vefel, run parallel, but by this 
means, are all feparated one from another. See the Figures belonging 
tothe Third and Fourth Wook. 
22. §. The Procefs of their Spiration, is not, fo far as I have ob- 
ferved, accidental, but conftantly the fame; fei. In the Root, by 
South, from Weft to Eaff: But in the Truk, contrarily, by South, 
from Eaft to Weft. 
23. §. The Content of thefe Veffels, is, as hath already been intt- 
mated, more Aery. The Arguments for which, are, That upon a 
tranfverfe Cut of the Root, the sap afcendeth not there, where 
Thefe-ftand. Being alfo viewed through a Microfcope, they are never 
obferved to be filled with Liquor. Befides a Root cut and immerfed in 
Water, till the Water is in fome part got into thefe Vefféls, and then 
the Root taken out and crufhed; the other Parts will yield Liquor, 
but Thefe, only Bubbles: which Bubbles are made, by fome {mall 
quantity of Liquor mixed with the Aer, before contained in the faid 
Vefels. To which, other Arguments will arife out of thofe Things 
that follow in the Second JPart. As alfo for this Cowtent, its not be- 
ing a pure or fimple, but Vaporous Aer. Whether thefe Veffels may 
not, infome Vegetables, and at fome times, contain Liquor, 1s doubt- 
ful. (4) Thus far of the Lignons Part. 

CHAP. 

