OCR Text |
Show The Anatomy Dakss: culated ; Book I Thev feem, at firft, where they are Braced, to be Inof as to be perviousone into another. But a more accurate caedallyaffite by aMz/crofcope,difcovers the contrary. Neither +d any wayoneabout another, as Threds are in a Rope: are they woun'd pu ey nor Implicated, as in ravled Yarn, or the Knots ofa Net: the Braces ° contiguous or fimply Tangent, as the feveral Chords in bea a Drum: being thus joy ned together by the Parenchymous Parts, fpeaking of the Pith, will be underftood how. Yet do not always the fame Threds belong and keep entire to one Brace 5 but are frequently parted into lefler Threds3; which are tranfpofed from Brace to Brace. Nordo theyalways, in whole orinpart, prefentlyafter their cont gence, mutuallyfall off agains but, oftentimes, run alongcollateralHig ia ly joyned together for fome fpace. 15. §. Thefe Braces are of various numberin divers me 5 a frequent in Ferufalem Artichoke, lefs in Scorzonera, morerare in unifry. The Threds likewife are varioufly Divaricated 5 fometimes more,where the Braces are frequent, as in fernfalem Articheke5 and fometimes lefs, where the Braces are rare, as in Scorzonera, Dandelion: And in all Roots, more frequent towards the Inner Verge of the Bark. 16. §. By what is faid, it is partly implied, That thefe Threds, are notSingle Vefelss but a Cluffer of them, Twenty, Thirty, or more or fewer ofthem together. Yet as the TAreds are not Inofculated in the Braces ; fo neither are the Vefels, in the Threds. Nor yet Twifted 5 but only ftandcollateral together; as the {everal Single Threds of the Silkworm, Ao in Sleave-Silk. Neither are thefe Veffels pyramidal, fofar as the Gla/s will difcover; or, from probable Reafon, may be conjec- tured, Nor Ramified, fo as to be fucceflively propagated one from another, after the manner of the Veizs in Animals: but Cylindrical, and Diftintly continued, throughout the length of the Root 5 as the feveral Fibres in a Tendon or Nerve. 17. g. THESE VESSELSare either themfelves of divers kinds, or ferve, at leaft, to conftitute divers Kinds, in divers Rosts: of the dif Wil ya ferent Natures whereof, although there may be other ways wherebyto judge ; yet fo far as by Infpedtion, we maydoit, chiefly, bythe Diverfity of thofe Liquors, which theyfeverally contain. Sometimes they yield a Lymphas and that Thin, as they do ina Parfneps efpecially thofe that make a R7wg, at the inward extremity of the Bark. See the Root it (IE That this Clear Sap afcendeth onlyfrom thefe Veffels, is certain. 1 line +| ifvind |} 1} Becaufe no Liquor will do thelike, from any Parenchymous Part, asChap. 2. hath been faid. And becaufe it is ofadifferent nature from the Sap contained in the Bladders of the Parenchyma 3 although of the fame Colour, yet fenfibly more Sweet. 18. § Sometimes they yield a Thick and Mucilaginous Lympha, as in Curefiy, as appeareth byits tenacity. From the Mucilaginous Con- tent of thefe Vefelsit is, 1 fuppofe, that the Sap contajned in the Bladders is rendred of the like nature, fo far as it approaches hereto, which fometimes is more, asin Mar/h-vallow 5 and fometimes but little as in Borage : For in prefling out the Liquor of this Plant, and then heating it over an indifferent fire 5 thefar greater part hereof remaineth thin 5 onlyfomecertain {trmgs andlittle bits ofa gellied fubftance are mixed herewith whichasit feems, were originally the proper Liquorof thefe Muciducts. 19. g. BookIL. 19. §. of Roots. Oftentimes thefe Succiferous Veffels yield a Milky or White Sap 5 and fometimes Yellow,and ofother colours asin Sonchus, and molt Cichoraceons Plants 5 in Angelica, and moft Ombelliferons 5 in Burdock and divers Thiffles, to which thatis ’akin: in Scorzonera, Common Bells, and many other Plants, not commonly taken notice of to be milky. The Milky Saps ofall which, although theydiffer in Colour Thicknefs, and other Qualities ; yet agree, in being more Oyly than any of the Lywphous saps. It being the mixture ofthe Oyly parts with fome other Limpid Liquor, but of a different Nature, which caufeth them to be ofa Milky, or other Opacons Colour, in the fame manner as common Qyl, and a {trong Ligquamen of Tartar, fhaked in a Bottle together, prefently mix into a White Liqior. And although they will, for the greateft part, feparate again ; yet fome of their parts, without any Boiling, or fo muchas the leaft Digeftion with Heat, by Agitation only,or {tanding together for fometime, incorporate in the form of a Thin Milky-Sope, which will alfo diflolve in Water. I fuppofe, therefore, That it isthe Volatile Salt, chiefly, of thefe Plants, which being mixed with their Oy/, renders this Liquor of a White or ; 20. §. Sometimes the Oy! will feparate and difcoverit (if: for if other Opacous Colour. you cut a Fevil-Root traverfe, after it hath layn fome days out ofthe Ground the fame Vefels, which, in a frefh Root, yields asilk 5 will now; yield Oyl: the watery parts of the Mz/k , which in the dry- ing of the Root are more evaporable, being {pent. 21. §. All Gums and Balfams are likewife to be reputed the proper Contents ofthefe Veféls: for Thefe and Milks, are very near akin. So the Milk of Fexil, upon ftanding, turns toa Clear galfam; of Scorzonera, Dandelion, and others, to a Gum. In the dryed Root of Angelica, &c. being fplit, the Milk, according to the Continuation of thefe Vefels, appeareth, as Blood clodders in the Veins, condenfed toan hard and fhining Rofiz. And the Root of Helenium cut Tab. 9. tranfverfely, prefently yields a curious Balfame of a Citrine Colour, and fometimes of the Colour of Balfame of Sulphur. 1 callit a Balfare 5 becaufe it will not diffolve in Water. Yet not a Terebinth ; becaufe, nothing nearfo vifcid or tenaceousas that is, But the Root of Common Wormwood, bleeds, from large Veffels, a true Terebinth, or a Tb. 10. F: Balfame with all the defining properties of a Terebinth; although that word be conimonly ufed only for the Liquors of fome Trees. 22. §. There is yet another kind of Sap-Vefels, which may be cal- led Vaponr-Veffels ; as im Docks, at leaft fome of them. Sap-Veffels ic is, that the Barques of Roots do Bleed. For by the Of which, fome Bleed quick and plentifully, asthe Onmbelliferous and the Cichoraceous Kinds. Some, very flowly and {earce vifibly, as all or moft Trefoyls, and of the Leguminous Kind. And fome feem not to Bleed, as the Dock, -¥et that this Root, hath alfo Veffels diftin& from thofe that carry Aer; doth partly appear, from the different Colour they produce where they ftand5 as will better be underftood anon, in {peaking of the Caufes of the Colours of Roots.As alfo ftom the Toughnefs of the Bargue, in pulling it by the length; neither the Parenchyma, nor the Aer-Vefels, being of themfelves Tough. But becaufe the Suecw4 or Sap they carry, feems to be a kind of Dewy Vapour, therefore, they may not improperly be called Roriferons Vapour-Veffels. 2 23. $0 |