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Show Of the Vegetation Book Il, ee 55. §. If the Parenchymous Parts have much the greateft, the Root {eldomliveth beyond Two Years; but afterwards perifheth etther in whole, or in part; as do divers bilbens, tuberous, and other Roots; whether they are more Porous andSucculent, or more Clofe and Dry. If Porous, all the Liquid Principles ftanding herein mote abundant, either by a ftronger Fermentation, or otherwife, Refolve the fixed ones of the Organical Parts; whence the whole Root, rots 5 as in Petato's, So alfo Parfreps, and fome other Roots, which, in a hard and barren Soil, will live feveral years, in another more rank, will quickly rot. Ifthe Parezchyma be Clofe, then the Aer, chiefly, entring in and filling it up,thus mortifies the Root; not by Rotting the Parts, but over Drying them; asin Satyrion, Rape-Crowfoot, Monks(a 56. 6. — if the Aer-Vefels have the greateft Proportion, and efpecially if they are more /arge, and withall, are /pread more abroad : the Root is Annual, as in Thorn-Apple, Nicotian, Carduns Ben. &c. (4) P.1.c.1. hood, &c. §. 13516. & P.2.$. 28, Tab. And of the fame Kindred, if any, thofe are Azmual, which have the moft Aer-Veffls. So Endive and sonchus, which have ftore of Aer-Veffels, are both Annual: whereas Cichory, in whichtheyare fewer, isa Perennial Root. For hereby a more copious Aer being Tranf (b)P. 2, §, fuled into all the other Parts; . (b) they are thus, by degrees, hard(8) Bs 2+ De ned, and become fticky ; and {o impervious to the Sap, which ought 25,26. to have a free and univerfal Tranfition from Part to Part. As Bones, byPrecipitations from the Blood, at length, ceafe to grow. Orthe fame more abundant Aer, fo far volatilizeth the Liquors in the Root, that they are wholly advanced into the Trazk , and fo the Root is ftarved. Whencealfo the Aer-Veffels of the Trunk; where they are numerous, and over proportioned tothe Bulk of the Root, as in Corn; they fo far promote the advance of the Sap, as to exhauft the Root, fucking it into a Confumption and Death. 57. §. FROM THE Principles of the Parts, their Contents and How the Contents of the feveral Qualities hereof are alfo various 3 (c) the Fluid of each the feveral Organical Part, being made, chiefly, by Filtration throughthe fides Parts are thereof 5 fuch of the Principles in the Sap, being admitted into, ‘and made. _ tranfmitted through them,as are apteft thereunto. In the like manner, Cc) Idea, $+ as when Oy and Water, being poured upon a Paper, the Water paffeth 54 through, the Oy! fticks : or as the Chyle is {trained through the Coats of the Guts, into the LaGéeal Vefels: or as Water in Purgations, is {trained through the Glands of the fame Guts, from the Mefenterical, 58. §. The Principles therefore of the Parenchymous Fibres being Jpirituows, acid, and aerial, they will alfo admit the like into them 3 excluding thofe chiefly which are Alkaline and Oleows. (d)) And as by the Conjugation offach Principles inthe Fibres, the like are capable of admittance into their Body : fo the Proportion and Union of the fame Principles, regulates the tran/miffion hereofinto their Concave. Wherefore, the predominant Principles of the Fibres being chiefly acid, next Spiritnows, and aery, the more aery ones will be tranfmitted. Forif more of them thould fix they muft do fo byfimilitude and adhefion : But wherethere are fewer fimilary parts to adhere to, fewer muft adhere. The Fibres therefore contain fo manyparts of Aer, as to admit many Book I. of Roots, 93 many more into their Body 5; but not to jix them 5 which therefore muft needs, upon admiffion, pafs through into their Comcave where, together with fomeother morefpirituows parts,they make an Aétherial Fluid. And becaufe fome aqueous or vaporous parts will alfo {train through with them 3 hence it is, that as more and more ofthefe enter, they by degrees ftill thruft out the aery ones 5 which quitting the more fucculent Fibres of the Parenchyma, are forced to betake themfelves to the dryer ones, fcil. all thofe, whereof the Diametral Portions do confit. For the fame reafon the Aery parts being gradually excluded thefucculent Fibres of the Barques they are forced to recede and tran& migrate into thofe ofthe Pith. Andthe Fibres of the Pith themf{elves being filled, aud the Aery parts ftill forced into them; they at length alfo {train through the Fibres into the Bladders: whenoe it comes to pal oe while the Bargneisfiacculent, the Pith is often times filled with der, 59- §. The Lymphedués being moreearthy, Salinous 5 oleous, and (2) P, 2. aqueous, will both admit and copioufly fix the like Principles, as their §. 21. proper Aliment. The Water being more perfluent than the reft, will therefore ftrain, with a lighter Tizéfure ofthem, into their Concave, Efpecially the Oleousparts of thefe being rampant, and lefSapt tofix and Jeize the aqueous, upon their entrance, than the fale. 60. §. The Laétiferous, appearing to be made, chiefly, by the Conttipation of the Parexchymous Parts all round about their Sides; the Liquor conteined in thofe Parts, although it may eafily enough be transfufed into the Hollow ofthefe Vefels 5 yet feems it not, with equal facility, to be refunded thence: So that the thinner and more aqueous Portion only, pafling off; the remainder, is, as it were, an Oleous Elixyr, or extract, in the form of a Milk. 61. §. The Fluid Ferment contained inthe Aer-Veffels, isalfo in part, dependent on the Principles of thofe Veféls, being in their percolation tin@ured therewith. But becaufe the percolation is not made through the Body ofthe Fibres whereof the Veffels are compofed, but only betwixt them; therefore thetranfient Principles more promifcuof ly, yet with an over porportion of dryer Particles, pafs into the Concaves of thefe Vefels, and fo are herein all immerfed in a Body of Aer. (6) The Fibres themfelves, in the mean time, as thofe of the (b) P. 2. Parenchyma, admitting and containing a more Aery and Aitherial§, 24. Fluid. 62. §. The Contents are varied, not only by the Nature, butalfo the Proportion and Situation of the Parts, whereby the faid Contents are with different Facility and Quantity, communicated one toanother. Henceit is, partly, that a Vie, or that Corn, hath fo little Oyl: /c. Becaufe their Aer-Vefels, in proportion with the other Parts, are fo Great and Numerous: in Corn, the Stalkbeing alfo very hollow, and fo becoming as it were, one Great Aer-Veffel. For the Oily parts of the Sap, are fo exceedingly attenuated (c) by the Aery Ferment contained in ©) P.2.$: thefe Vefels; that they are, for the moft part, fo far immerfed in the 25, & 56: Spirit, or mixed therewith, asnot, bybeing collected in any confiderable Body, to be diftinguifhable from it. And the affinity thatis betwixt Spirits and Oils, efpecially Efential, is manifeft : Both are very inflammable; Both will burn all away; The Odors, which wecalf the Spirits of Plants, are lodged in their effential Oyl, Both, pes duly |