The Anatomy Book L 
is of its broken Bladder, we (hould thence by the fame reafon con- 
clude that they are not penetrable by the breadth neither, and fo no 
ways and then it need not be ask’d what would follow. But cer- 
tainly the Sap in the Bladders of the Pithis difcharged and repaired 
every moment,as by its fhriv’ling up,upon cutting the Plangis evident. 
32. $. We fuppofe then, that as the Sap afcendeth into the Trank, 
by the Lignous Body, fo partly alfo by the Pith. Fora piece of Cotton 
with one end immers'd in fome tinged Liquor, and with the other 
ere& above, though it will not imbibe the Liquor fo far as to over- 
run at the top, yet fo asto advanee towards it, it will. So here, the 
Pith, being a porous and fpongy Body, and in its Vegetating tate, its 
Pores or Bladders being allo permeable, as a curious Filtre of Natures 
own contrivance, it thus advancetb, or as people ufe to fay, fucks up 
the Sap. Yet as it is feen of the Liquor in the Cotton 5 fo likewife are 
we to fuppofe it of the Sap in the Pith; that though it rifeth up for 
fome way, yet is their fome term, beyond which it rifeth not, and 
towards which the motion of the afcending Sap is more and more bro- 
ken, weak and flow, and fo the quantity thereof le and lef. But 
becaufe the sap moveth not only by the length, but breadth of 
thej Pith; at the fame time therefore as it partly afcendeth by the 
Pith, it is likewife in part prefled into the Ligaous Body or into its 
Pores. And fince the motion of the Sap by the breadth of the Pith 
not being far continued, and but collateral, is more prone and eafie, 
than the perpendicular, or by its lengths it therefore follows, that: 
the collateral motion of the Sap, at fuch a height or part of the 
Pith, will be equally ftrong with the perpendicular at another part, 
though fomewhat beneath it; and that where the perpendi 
more broken and weak, the collateral will beleß; and confequentiy 
where the perpendicular tendency of the Sup hath its term, the colla- 
teral tendency thereof, and fo its preflüre into the Pores or Vefels of 
the Ligrous Body, will fill continue. “Through which, in that they 
are fmall, and fo their fides almoft contiguous, the sap as falt as pret 
fed into them willcafily run up 3 as in very fmall Glafle Pipes, or be- 
twixt the two halves of a Stick firft flit, and then tyed fomewhat loofe- 
ly together, may alfo any Liquor beobferved to do. By which Ad- 
vantage the facility and ftrength of that afcent will be continued 
higher in the faid Vefels, than in the Pith Yet Gince this allo, as 
well as that in the Pith will have its term; the Sap, although got 
thus far, would at laft be ftagnant, or at leaft its afcent be very {pa- 
ring, flow and feeble, if not fome way or other re-inforced. Where- 
fore, asthe sap moving by the breadth of the Pith, prefleth thence 
into the Vefils of the Lignous Body; fo having well fill'’d thefe, is 
in part by the fame Collateral motion disburfed back, into a yet 
higher Region of the Pith, By which partly, and partly, by that por 
tion of the Sap, which in its perpendicular afcent was before lodged 
therein ‘tis thus here, as in any inferiour place equally replenifhed. 
Whereupon the force and vigour of the perpendicular motion of the 
Sap herein, will likewife be renew’d ; and fo its Colla fe 
and fo its preffure into the Veffels of the Lignous Body, ar 
itsafcent therein 
from the Pith int 
cular is 
co 
: and fo by a preflure, from thefe into the 
o thefe, reciprocally carried on ; a moft 
Pious aftent of the Sap will be continued, from the bot 
though of the higheft Tice. 
