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Show The Anatomy 68 23. § Book I. THEsap-Vefels, are not only ofdivers Kinds, in divers Roots, but inthe fame. Whether in all, I doubt : but in fome it is certain they are: For if you cut a Femil-Root traverfe, both Milkand Limpid Sap, will prefently afcend, and, upon accurate infpection, appear thereupondinftin@ly. So the Roots, both of Trachelinm and Enula, Bleed both a Lympha, and a Citrine Balfime: and Wormwood, both a Lympha, anda Terebinth, at the fame time. Soalfo the Root of Dandelion being cut in November, feems to bleed both a ask and a Lympha; the latter being drowned bythe former at another time whenit is more copious. ‘Whetherall Roots have Lympheduéts, is doubtful 5 but ‘tis moft probable, that they have, more orfewer 5 ftanding, for the moft part, in a Ring, at the Inner Verge of the Bargque: the Sap whereof, I fuppofe, is fo far of common Nature in all Roots, as to be Clear, and lefs Oily. 24. §. THE Quantity of thefe Vefels is very different: In Borage, Peony, Biffort, but few 5 in Afparagus, fewer: in Parfnep, Celandine, many; in Femil, Mar(h-mallow, many more: and betwixt thefe ex* treams, there aremany Degrees, as by comparing the Roots of Hor/eRadifh, Turnep, Briony, Skirrets, Parfley, Goats-Beard, and as many more as you pleafe, may be feen. Amongft the feveral Sorts of Docks, they feem in Patience, to be the feweft; in Red-Dock, the moft numerous. There are two ways of judging of their Number; Either as their Extremeties are vifible upon the traverfe cut of the Barque 5 or as the Barque is diverfly Brittle or Tough 5 being fo, from the various Numberof thefe Vefels therein, as in the Second Chapter hath been faid. 25. §. The Quantity of the afcending Sap, is a doubtful argument, whether of the Number, or Size of thefe Vefels. For it is common to moft Milky-Roots, for the Milk to afcend more copioufly: yet in fome of them, the Veffels feem, in proportion with the Paren- chymous Part, not to be fo numerous, as in fome other Roots, where the afcending Supislefs5 as by comparing the Laéfeals of Dandelion, and the Lympheduits of Fenil together, may appear: fo that it fhould feem, that the bore of the Laéfeal Veffels, is greater than that of the Lymphadudts. 26. §. THE Situation of thefe Veffels, as they appear, even to the naked Eye, in the tranfverfe Seétion, is Various and Elegant. Sometimes theyare pofited onlyat the Inner Edg of the Barque, where 9, they makea Ring, asin Ajparagus. In which place and pofition, they ftand in moft, if notin all, Roots, how varioullly foever they are pofited alfo otherwife. The Common Crow-Foot with numerous Roots, hath a Ring of sap-Vefels next the Skin. So the Barque of MonksHood, is encompafied with a tranfparent Ring of Sap-Veffels. The Ring is either more Entire, as in Eryngo, Brown-Wort, Valerian, Hop, Madder, ec. Or it is a Prick'd Ring, as in Buttyr-Bur. Sometimes they are chiefly poftur’d in a Prick-Ring, towards the outward part of the Bargue , as in Peony: and fome Roots are pricked all over the Barque, as of Melilot. In others, they ftand not fo much in Pricks, as Portions or Colvms, as in Cumfry: 27+ §. Book IL. of Roots. 69 27. §. In others, again, they all ftand in more continued Lines, either Rays or Diametral, as in Borage; or Peripherial, as in Celandine. The Vafcwlar Rays are not equally extended in all Roots: in Parfnep, towards the Circumference of the Bargue 5 in Buglofs, about half way. In all Docks, and Sorrels, the Rays are extended through about 3 of the thicknefS of the Bargue, towards the Circumference, Tab. 7> 8, 9 whereabout, divers of them are always arched in, two and two toge- ther. In all ormany Trefoyls, and of the Leguminous Kind, they are extended through no more than 34 of the Bargue. In the Umbellife~ rous, they are Ralled in betwixt the Diametral Portions of the Parenchyma. 1n Borage, the Rays are more Continuous 3 ina Carrot, more Pricked. Here alfo the Pricks ftand in Even Lines; in Lovage, they are Divaricated. Of which, and thofe of fome other Roots, it is alfo Obfervable, That they are notall meer Pricks, but moft of them fmall, yet real Circles; which, after the Mi/& hath been frequently licked off, and ceafeth to afcend, are vifible, even without a Glafs. Andnote,that in obferving all Milk-Veffels, the milk is to be taken off, not with the Finger but the Tongue 5 fo often,till it riftth no more, or but Jittle. And fome Roots may alfo be foaked in Water 5 whereby the Pofition of the Milk-Vefels, will be vifible by the darker Colour of the Barque, where they ftand. 28. §. The Raysfometimes, run more Parallel, and keep feveral, as in Moxkjhood ; and fometimes, towards the Circumference of the Barque, they are occurrent ; as not only in Docks, but other Plants: Tab. 7,8,95 In Eryngo, ina termination more Circular ; and in Bryony, angular, or in the form ofa Glory, as alfo in Horfradifh, through a Microfcope. Tab, 15. The Peripherial Lines are in fome, more entire Circles, as in Dandelion - inothers, made up of fhorter Chords, as in Potato , Cumfry, and the fmaller part of the Root of Moxks-hood. In fome, the. Pricks are fo exceeding fmall, and ftand fo clofe, that, to the bare eye, they feem to be continous Rings, which yet, through the Microfcope, appear diftind, as in Marfh-mallow and Liquirifh. 29. §. Sometimes Columns and Chords are compounded, as in Burnet, Pricksand Chords, in Potato; Rays and Rings, in Moxk(hood ; where the Ring is Single. In Femil, there is a doubleortreple order both of Rays and Rings, the Lymphedués {tanding in Rays and the Laéeals in Rings. And in Marfb-mallow, the Veféls are fo pofited asto make both thofe kinds of Lines at once. 30. §. In Celandine, they feem all, to the bare eye, to ftand in numerous Rings lying even one within another. As alfo in Dandelion; in which yet, being viewed through a Microfcope, there is an appearance ofvery many {mall Rays; which ftreaming from the Inner Verge ofthe Barque, crofS three or four of the fmaller Rings, and are there terminated. Whenceit fhould feem that Lymphatickh Rays and Milky Rings, are in thatRoot, fo far mixed together. Only the Lympha, be- ing confounded with the M/k, cannotbe difcerned. And where the Mily-Vesels are evacuated, or at fuch Seafons, wherein they arelefs full, divers Milky Roots will yield aclear Liquor at the Inner Verge of the Barque, where, at other times, they feem to yield only Milk, Andthis is the Defcription of the Bargue. CHAP. Tab. 12. |
