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Show Book IL. The Anatomy 110 Book UL of Trunks. Ili | ther different, as hath been faid. Secondly, from the moft apparent Liquors or Saps, which they contain, and which, upon Diverfity of the cutting the Branch tran{verfly, do diftinétly Bleed from them. Which themfclves. is one way, whereby we do diftinguith the Ve/fels of Avimals Asin the Liver, it were hardto fay, which isa Blood-Yefel, and which is a Bile-Veffel, whete they are veryfmall, if it were not for the Conape tents of them both. 18. §. Thofe inthe Barque of Pine, arelikewife of Two Kinds, The utmoft are The inmolt are Lympheduds, asin thetwo former. not Milk-Veffels, but Gum-Veffels, or Refiniferous ; which ftandftrag- ling, and fingly, about te ee a thesBerge: aoe Veffels 4 spentix t D! m the ree, oth gin of the Barque, contiguous with the Wood. Thefe veffels exhibit their Lympha very apparently. A fecond kind of Veféls, {c. Roriferons, are fituate towards the outer Margin of the Barque, and are compofed into diftin& Arched Parcels, all {tanding in a Ring. 25. §. Betwixt thefe Two Kinds ftand the MilkVeffels. vous. The Milk-Veffels are extraordinary large, almoft as the GumVeffels of Pine 5 {0 as diftinély to be obferved without a Microfcopes after they are evacuated of their Milk 5 and without difficulty will admit a Virginal Wyer 5 being two or thtee hundred times as big as a eevee ieeeeae a Ring, ‘ Number and Pofition, andof the Liquors which they contain,and Bleed; Evety fingle Milk-Veffel being empaled or hemmed in with an Arch of Rorife- iilue, Cae aseGar eryeae aE belides the difference of their eeeara |, | eo 26. §. 5 a OYETCT OWS « The Latt, is a Branch of Common Wormmood. Barque whereof, there are likewife Three Kinds of Vefféls. there is yet a Fourth, and that is, their Size. Moft of thefe Turpentine Vefjels, being of fo wide a bore, as to be apparent to the naked Eye: all, there is a thin Radiated Ring of Lymphedués, contiguous with the Wood or on the inner Margin ofthe Barque. Yet the Ring is not en- and, through a good Glafs, above 34 of an Inch in Diametre. tire, but made up of feveral Parcs} which are intercepted by as ma- Whereas that of the Lympheduéts, can hardly be difcovered by the beft ny Parenchymous inferted into the Pith, Microscope. 20. §. The fame Turpentine Veffels of Pine, are likewife remarkably bigger, not only than the Lywpheduds, but many times, than the MilkVeffels themfelves: as thofe of the Fig, which, in comparifon, are exceeding {mall ; every Arch, not being a ingle Veffel, but a Parcel or Clufter of Veffels; Whereas one fingle Gum-Veffel in Pine, is fometimes as big as two whole Arched Clufters, that is, as fome Scores of the Milk Veffels in a Fig-tree. And the aid Gu-Peffels of Pine, being compared with the Lymphedudis of the fame Tree, one Gum-Veffel, by a moderate eftimate, may be reckoned three or four hundred times wider than a LympheduG. The like prodigious difference may be obferved in the Size ofthe feveral Kindsof Veffels of many other Plants. 21. §. THE Three next Quarters of Branches, are of Oak , Common Sumach, and Common Wormwood. In the Barque-Velfels whereof, there isobfervable fome farther Variety. For in all or in moft of the above named, there are only Two Kinds of Feffels in the Barque. But in Each of thefe, there are, at leaft, Three Kivds. 22. ¢. Andfirft, in that of Ozk there are Lympheducts, Roriferous, and aSort of Refiwiferous. The inmoft or Lymphedués, make a Radiated Ring, contiguous tothe Wood. Theutmoft or the Rorife- rous make alfo a Ring, but not Radiated. Thofe which are a fort of Rofin-Veffels, ftand in Round Parcels 5 the greater Parcels betwixt the TwoRings of Roriferous and Lympheduéts ; and the \efler, betwixt the Roriferous and the Skin. 23. §. Thatthefelaft are different Ve//els from both the other,feems evident, fromthe difference of their Pofition, as aforefaid. And that they are a fort of Refiziferous, is argued from hence; In that, not only Gals are very full of Rofiz, but that the Barque of Oak it felf is alfo fomewhat Refinous. For the conveyance of whofe Refizeus parts, it is moft unlikely that any other Vefels fhould fubferve, but a peculiar Kind which maytherefore be properlycalled Refiniferous. i. §. Thenext isa Branch of Common Sumach. n the Barque whereof, there are likewife Three Kinds of Veffels. Pirft of all, there is a thick Radiated Ring of Lympheduds ; {tanding on the inner Mar- gin 27. §. A Second Sort of Veffels, which feem to be Roréferous, are fituate about the middle of the Barque : and ate compofed into Arched Parcels, which likewife ftand all even in a Rézg. 28. §. Beyond thefe Arches, and towards the outer Margin ofthe Bargue, {tand a Third Sort of Veffels. Different from the Mi/k-Ve/Jels in Sumach, both as to their Situation, Size atid Content. For in Sumach,the Milk-veffels tand within the Arched Lympheducfs + whereas thefe in Wormwood, ftand without them. Likewife, being the Ve/els ofan Herb, they arefar lefs 5 /¢. about the compafs or width ofa {mall Wheat-straw. aN In the Lab. 34: Firlt of ii ' I li | i Hi l | mil he i Mi Their Content, is not a Milk, but a liquid, molt Oleom and viftid Gum. Or which, for its pleafant Flaevur may be called an Aromatich Balfom, For it perfectly giveth whateveris in the Swe and Tafte of Wormwood: being the Effence of the whole Plant, which nature treafureth up in thele Vefels. So that they are, in all refpetts, analogous ta the Turpentine Veffels in Pine. There are divers other Herbs and Trees, which in the like Veféls, contain a Turpentine, or rather Aromatical Balfom; as Angelica, Heleninmand others 5 the Veffel being fo very large, that they may beeafily traced with a knife, in cutting by the length ofa Branch or Salth, 29. §. Whether in fome Plants, there atenot more Sorts of Vef= ~ Jfels, in the Barque, than have been now mentioned, I cannot fay: Though we have not muchreafon to doubt of it. Becaufe wefee, there is fo great variety in the Vifcere of Avimals. For what the Vifcera are in Animals; the Veffels themfelves are in Plants. 30. §. CONCERNINGthe Form and Texture of the Lympheduits, there are fome things, which though they are beft obferved in the Wood, yet in regard lam now deféribing the faid Ve/els, I fhall here therefore add. [ have already faid, and thewed, in the former Books, That the Lignous and Towy Parts of all Plants, are Tubulary. And that the Lympha is conveyed, by the length of a Plavt, through an innumerable company of fmall Tubes or Pzpes. 31. §. The Queftion may be yet farther put: If the Towy Parts of the Barque are made of Tubes, What are thefé Tnbes themfelves made up of? I anfwer, That thefe Tubes or Lymphaduits, are not only themfelves IT | ' |
