E of Leaves, 
Book IV. 155 
14. $. In Borage, and Moth-Mullen, they ftand alfo ih Five Par- Tab, 
eels, Inthe former, thelargeft maketh (till a more bulky Arch, than T2- 49- 
that of Clary 5 being thicker, as broad, and of a lefler Circle or more 
bowed. But in Mudeiv, it maketh almoft an entire Oval. 
15. $. By means ofthis Figuration, a fafficient number of Vejjels 
for fuch large Leaves, are not only more conveniently Diftributed into 
them 5 but alfo ftand more fafely in the Stalk, Forwere the Arch con- 
traded into a Jolid Cylinder, it could not fo prefently be refolved into 
{mall Fibers. And were it laid into a flat Plate, or {traight out, either 
the Figure of the stalk, and fo of the Leaf; mut be altered ; or elfe, the 
two ends of the Plate, would come too near the Circumference of the 
Stalk , and fobe more liable to the Impreffions of the Weather : as may 
be obferved in cutting the Stalk tranfverfly, and by the Figures. 
16. $. IN the Body of the Leaf, befides,the Pofitions of the Fibrous 
Strings Br Thredss above expefled, there is one Thred, bigger or lefe, 
which in all Plants, runs round the Edge of the Leaf,and hems in all the 
reft; but can hardly be well obferved in any, without {tripping offthe q, y 
Skin of the Leaf. When the Fibres of the Leaf, are bigger,or lefs tender, 44 50. 
asin Holly , the Skin and the Pulp are fometimes found either rotted 
off, or eaten away with Infe&s; whereby, both the fiid furrounding 
Fiber, and the reft, are all very fairly vifible. 
17. $. THE Vefels feem to be continu’d; in the Leaf, by being 
re. Inthe Ramified out of Greater into Lef, as Veins or Arteries arein Animals. 
Butif the Skin and Pulp of the Leaf, as fappofe a Borage-Leaf be taken 
off, and the Veffels laid bare 3 by the help of a good Gafi, it will ap- 
pear; That they areal ofthe {ame Size, every where in the Leaf’; Tab. 50. 
and alfo continued throughout the fame, all feveral and diftintt Pipes one 
from another, as the Threds in a Skein of Silk. And that therefore the 
Diftribution of the Threds which the Veffels compofe, is not the Ramify- 
ing of Greater Pipes into Lef; but the dividing a greater Clufter of 
Pipes, into feveral lefler Clufters, till at laft they come to be fingle; as 
in the Diftribution of the Nerves. 
18. $. The Veféls feem alfo to be Inofculated, not only fide to 
fide, but the ends of fome into the Sides of others. But neither is 
this ever really done : the leffer Threds, being only fo far diduéted, as Tab. 50, 
fometimes to ftand at Righi- Angles with the greater. So that they are 
Inofeulated only End to End or Mouth to Mouth; after they are come 
at laft to their final diftribution. 
19. $. The Aer-Vefels, are not only, as is faid, Exiftent in the 
Leaves of all Plants ; but are herein alfo difcoverable without the help 
of Glafés: ` For upon breaking the stalk or chief Fibers of a Leaf ; the 
Tikeneís of a fine Woolly Subltance, or rather of curious fmall Cobwebs, 
may be feen to hang at both the broken Ends. This is taken notice of, 
only in fome few Plants, asin Scabions, where it is more vifible. But 
may alfo be feen more or lef, in moft other Plants, if the Leaves be ve- 24.51, & 
ty tenderly broken: as I have noted near twenty years fince; and 52. 
thence conjeótur'd them a Sort of Vefel common to Plants. Now this 
fine Wool, is really a Skeiz of Aer-Vefféls, or rather of the Fibers of the 
Aer-Veffels, unroaved from their Spiral Pofition, and fo drawn out in 
Length. As they appear thus unroaved and drawn out at Length, both 
to the bare Eye, and through a good Microfcope, I have reprelented in 
two Exemples, the one a Scabions Leaf, the other that of a Vine. 
Cc 2 26, $. 
