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Show of Roots, Boal IT, SS i: an Inch or twoInches in length. This Wool being nothing certain numberof Fibres Refolved from their oer politiont - , mes GitdeA Py fn Vefels, and Drawnout in Length5 andfocluftred ese f “ es yi Threds or little Ropes: appearmg thus moreor lefs, in sé fom “ fome other Parts of moft Plants; but more ret rquably in : ue in the Vine, Scabious, and others. As alfo in the Sc cs of ‘3 « Of the PITH. which laft, for example, they are fo caltly — aae 0 fhew, what before was obferved 3 viz, That the hag as pita which the Aer-Veffels are ufually Refolved, is not oneSingle =a or BiTHIN the Lignous Part lyeth the Pith This Part is not commonto all Roots, for fome have none, as Nicotian, Srtamovium, and others. Yet many which have none, or but little, throughout all their lower parts, have one fair enough about their tops, as Mallow, Bourage, Dandelion, and meer Plate ; but made upof feveral Round Fibres, all ftanc ing .. running parallel, and fo knit together by other fmaller hey Ga verily, in the form of a Zone. For if you break orcuta ea} or by of a frefh Squil/, till you cometo the Aer-Veffels, and having fo ily drawn them out, for about an Inch or more( to the naked 2M a length, you then fingle out one or two of them from the : we row! them, as they hang at the Shell, eight or nine times roun a Vefel will appear, through a Gla/s, to confift of 8; Yo, Of 12 pe 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 W00kS. 22. §. The Procefs of their Spiration, is not, fo far as [ have obferved, accidental, but conftantly the fame; fel. In the Root, by South, from Weft to Eaff: Haft to Weft. But in the Trunk, contrarily, by South, ee! paar : een of thefe Veffels, is, as hath already been inti- mated, more Aery. eee eed The Arguments for which, are, That upon a tranfverfe. Cut of the Root, the Sap afcendeth not there, where Thefé ftand. Being alfo viewed througha Microfcope, they are never a i (2) See Book 3. iM Wai) ak NAAN) at Tn! iis ay obferved to be filled with Liquor. Befides a Root cut and immerfed in Water, till the Wateris in fome part got into thefe Veffels, 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 inthe faid Vefels. To which, other Arguments will arife out of thofe Things that follow in the Second Jatt, As allo for this Content, its not being a pure or fimple, but Vaporous Aer, Whether thefe Veféls may not, infome Vegetables, and at fome times, contain Liquor, is doubt fal. (a) Thus far of the Lignons Part. i i HH iil) aN ¥: diftributed betwixt the feveral Rings of Ve/els, and every where vifible, from the top to the bottom, asin Bet, Fenil, &e, 2. §. The Size ofthe Pith is varied Many Degrees, eafily rec- Tab. 8. koned_an Hundred; in Fenil, Dandelion, Afparagus, but {mall 5 in Horfe-Radifh, Valerian, Biffort, great. The Shape hereof, in the lowerparts of moft Roots, is Pyramidal 5 but at the tops, Various, ac- cording to thedifferent Diftribution of the Ve/els, 2s in Carrot, Fyper- 4p, é: bolick, in Parfley, Ovals as appeareth, in cutting the Roots lenghtways. 3. 8. The Pith,for the moft part,efpecially in Trees,is a Sivple Body : but fometimes, it is, as the Bargue, compounded ; fome certain number of Succiferous Vefeéls being mixed herewith 5 as in Ferufalern Artichoke, Tub. 66 & Horfe-Radifh, &c. upon a traverfe cut, by a {triét view, may be “7% % difcerned. Their Pofition is fometimes Confufed, as inaGarrot ; and fometimes Regular, as in Parfley 5 appearing, by the traverfe cut, in 7)6 Rings, and in cutting by the length, in Arches. And fometimes the Pith is hollow 3 as in the Level-Roots of Bifhops-Weed: thefe Roots being made outof the Stalk, as in the First Chapter hath been thew- ¢.13,14,1 §: ed, how. 4. §. As all the other Partsof the Root, are originated from the Seed ; fo, fometimes, is the Pith it CI But fometimes, it hath its more immediate Derivation from the Bargue. Henceit is, that many Roots, which have no Pith in their lower parts, have one at their top, as Columbine, Lovage, &c. For the Parexchymous Parts of the Tab. Barque being, by degrees, diftributed into Diametral Portions, run‘ ning betwixt thofé of the Lignous Body, and at length, meeting and uniting in the Centre, they thus conftitute the Pits. In the fame manner, at the top of fome Roots, the Pithis either made or augmented, out of the Purenchymous Rings above defcribed; thee being gradually diftributed to, and embodied in the Centre 5 asin Fenil, and fome other Roots, their lower and upper parts compared FySaisie may be feen. Even asin Avimals, one Part, as the Dura ater, 1 the original of divers others. CHAP. _, the like. See the Roots. And in many others there 24% & are Parenchymous Parts, of the fame fubftantial nature with the Pith, Q2 |