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Show » ace —-- The Anatomy a Book I. y are no thicker,than a {ingle one might be made ; yet ftandnce, havea greater ftrength than That ponld have, And Architecture, will have the fame ufe,in the Trunks of Plants 5 ing the Es in moft whereof‘tis very apparent 5 as for inftance, in kar, For Nature defigning its Sapa great Afce nt 5 for its highe r maturity, hath given ita tall Tru#k: Butto prevent its ravenous defpoiling either of the Ear, or Soyls althoughit be tall, yet are its fic s but thin: And becaufe again, it fhould grownot only tall and thriftily, but for avoi- ling propping up, {trongly toos the One, AP fame proportion apis } bears, to the thinnefs of its fides, doth the greatnefs of its Cir cumference alfo5 being fo far dilated asto ‘allel a Quilt felf. §. Befides the pofition of the Lignous Body within the compafs there are fome Shootings thereof, often ftanding beyond amfe faid Rzwg, making fometimes a triangular, y of the Truk. To the end, that the Ring, fuflicient, thefe, like Splinters to Bones. plenty ofthe sap. For fhould the * Body, as it doth in the {maller Parts of the Root, {tand Central Ifo, and fo the Cortical wholly furround it: the greater part of the Sap would thus be more immediately exposd to the Suz and Aer5 : gedin a laxe Body, by them continually be prey’d upon, ind as faft as fupplied to the Trunk. be exhautted. Whereas, the Pith {tanding in the Center,the s ap therein being not only moft remote from fer anid Sun, but bythe Bay 1 efpecially the Wood, being alfo furrounded and doubly imn ‘d, will very fecurely and copioufly be convey’d to all the Collateral Parts, and (as fhall be faid how _) thetopofthe’ Truk. 7. §. And the Sup bythe amplitude, and great porolity of the ing herein more copious, its Fermentation alfo will be quicker; ch we n all L ors,by {tanding in a greater quantity together, proceeds more kindly: And be 1g tun'd up within the Wood, is at the fame not only fecur'd from lofs; but all extream mutati— ons; the Daybeing thus, not too hot; nor the Night, too cold for it. 28. §. And the Fermentation hereof being quicker, its motion alfo will be {tronger, andits Diftribution more effectual, not only to the dilatation of the Trak, but likewife the fhooting out of the Branches. Whence it is, that in the Bodies of Trees, the Barque of it felf, though it be Sappy, and many Fibres ofthe Lignous Body mixéd with it, yet feldom fendeth forth any 3; and that with the lealt Pith ( other advantages not fupplyin in Herbs, thofe g this defe& ) have the feweft or {malleft Branches, orother collater al Growths : and that Cor”, which hath no Pith, hath neither any Branches. 29. §. Laftly, the Advancement of the Sap will hence alfo be more ready and fufficient. For the underfta nding where, and-how, we fuppofe, That in all Tiwa#ks whatfoever there are two Parts joyntly hereunté fubfervient. In fome, the Lignows Body and the Cortical, as in older Trunks ; the Pith being either excluded, moft, principally, the Lienous Body and Pith, or dried: But in Growths of Trees; but elpecially Herbs, where as inmoft Annual the Cortical Body is ufually much andoften w holly Inferted. Book eee L 7 Plants. 3c. §. Of the Lignous Body it is fo apparent byits Pores, or tather by its Vefels, that we need no farther Evidence. For to what endare Veffels, but for the conveyance of Liquor? And is that alfo, which uponcutting the young Branch an accurate and fteady view may of a Sappy Tree or Herb, by be obferved. But when I fay the Veffels of the Lignons Body, 1 principally them of the Joungerfootings, both thofe which mean make the new Ring, and thofe which are mixed with the Cortical Body in the Barque s that which afcendeth by the Pores or Veffel caufe in lef§ quant s of the Wood, being probably , be- ity, more in form of that which drenching into the fides a Vapour, than a Liquor. Yet ofits Pores, is with all thereunto fufficient Aliment ; as we fee Orpin e, Onions, Gee, only ftanding in a moyfter Aer will often grow. And being likewife in part fupplied bythe Infertions from the younger Shoots: But efpecially becaufe as it is but little, fo (confidered as Alim ent) it ferveth only for the growth of the Wood, and no more 5 whereas, the more copious Aliment afcenden t bythe younger Shoot growth, but the generation of other s, fubferves not only their own s; Cortical Body the Fountain of Perfpirati andis befides with that in the ons, which we know even in Animals are much more abundant than the Nutritive Pari s; and doubtlefs in a Vegetable are {till much more. 31. §. But thefe Pores, although they are a free and open way to the afcending sap; yet that meer Pores themfelves to advance the Sap with that or Veffels thould be able of {peed, ftrength and plenty, and to that height, as is neceffary, cann ot probably be fuppofed. It follows then, that herein we mu(t grant the Pith a joynt fervice. And whyelfe is the P7thinall Primitive Growths the moft Sappy part, why hath it fo great a ftock of sap, if not, after due maturation within it felf, ftill to be disburfed into the Fibre s of the Ligvous Body2 Why are the Annual Growths of all both Herbs and Trees, with great Piths, the quickeft and the Jongeft> But howare the Pores or Bladders of the Pith permeable> That they are fo, both from their being ca- pable of a repletion with Sup, and of bein are Pores, That theyare permeable, the dilatation of the Lignous Body, andfrby the breadth, appears from om the production of Bray. g again wholly emptied of it, and again, inftead thereof fill' d with Aer, is as certain as that they ches, as hath been, and (hall herea fter be faid. And howelis there a Communion betwixt This andthe Corti cal Body? That theyare fo alfo, by the length, is probable, becaufe bythe beft Microfcope we cannot yet obferve, that they are vifibly more open by the bread th, than bythe length. And withall are rank ed bythe length, as thofe of the Infertions by the breadth ofthe Trunk, But if you fet a piece of dry Elder-Pith in fome tinged Liquor, whythen doth it not penetrate the Pores, fo as to afcen d throughthe Bodyof the pith2 The plain reafon is,becaufe theyareall fill’d with Aer, Whereas the Pith ina Vegetating Plant, as its Parts or Bladders are ftill generated, they are at the fame time alfo fill’d with Sap 3 which, as ‘*tis gradually {pent, is {till repaired by more fucceeding , and fo the Aer {till kept out 5 asin all Primitive Growths, and the Pith ofElder it felf: Yet the fame Pith, byreafon of the following Wint er, wanting a more copious and quick fupply of Szp,thus once become, ever after keeps dry. And fince in the aforefaid Trial the Liqu or onlyafcends by the fides of the Pith, that K Le] |