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Book TIL. of Trunks. 1it 
gin of the Barque, contiguous with the Wood. Thefe Peffels exhibit 
their Lywpha very apparently. A fecond kind of Feffels, {c. Roriferous, 
are fituate towards the outer Margin of the Barque, and are compofed 
into diftin& Arched Parcels, all ftanding in a Ring. 
25. §. Betwixt thefe Two Kinds ftand the Milk-Veffels. Every 
fingle Milk. Veffel being empaled or hemmed in with an Arch of Rorife= 
vous. The Adilk-Veffels are extraordinary large, almoft as the Gua- 
Veffels of Pine 5 fo as diftin@ly 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 three hundred times as big asa 
Lymphedud. Befides thefe Three forts of Vefels, there is alfo a Ring, 
adjacent to the S4zz 5 which feems to be another fort of Roriferous. : 
26. §. The Laft, is a Branch of Common Wormwood. In the Tab. 35; 
Barque whereof, there are likewife Three Kinds of Vefels. Firlt of 
all, there is a thin Radiated Ring of Lymphedués, contiguous with the 
Wood or on the inner Margin of the Barque. Yet the Ring is not en- 
tire, but made up of feveral Parcels ; which are intercepted by as ma- 
ny Parenchymows inferted into the Pith, . 
27. §. A Second Sort of Veffels, which feem to be Roriferous, ate 
fituate about the middle of the Barque: and are compofed into Arched 
Parcels, which likewife ftand all even in a Ring. 
28. §. Beyond thefe Arches, and towards the outer Margin of the 
Barque, ftand a Third Sort of Vefféls, Different from the Milk-Vej- 
fels in Sumach, both as to their Situation, Size and Content. For in 
Sumach,the Milk-Veffels {tand within the Arched Lymphedudts ¢ whereas 
the in Wormwood, ftand without them. Likewife, being the Ve/els 
ofan Herb, they are far lefs5 fe. about the compa{s or width ofa {mall 
Wheat-straw. Their Content, is not a Milk, but a liquid; moft Oleous 
and viféid Gum. Or which, for its pleafant Flavour may be called an 
Aromatick, Balfom, For it perfectly giveth whatever is in the Swell 
and Tafte of Wormwood : being the £ffence of the whole Plant, which 
nature treafureth up in thefe Veféls. So that they are, in all refpetts; 
analogous to the Turpentine Veffels in Pine. There are divers other 
Herbs and Trees, which in the like efels, contain a Turpentine, or ra~ 
ther Aromatical Balfom; as Angelica, Heleninmand others 5 the Veffels 
being fo very large, that they may be eafily traced with a knife, in cut- 
ting by the length ofa Branch or Saltk, 
29. §. Whether in fome Plants, there are not more Sorts of Vef- 
fels, inthe Barque, than have been now mentioned, I cannot fay 
Though we have not much reafon to doubt of it. Becaufe we fee; 
there is fo great variety in the Vifcera of Avimals. For what the 
Vifcera axe in Animals 5 the Veffels themfelves are in Plants. 
30. ¢. CONCERNING the Form and Texture of the Lymphedudts; 
there are fome things, which though they are beft obferved in the 
Wood, yet in regard Lam now deferibing the faid Vefels, I tall here 
therefore add. [have already faid, and fhewed, in the former Books; 
That the Lignous and Towy Parts of all Plants, are Tubulary. And 
that the Lywpha is conveyed, by the length of a Plant, through an in- 
numerable company of {mall Tubes or Pipes: 
31. $. The Queftion may be yet further put: Ifthe Tomy Parts of 
the Barque are made of Tubes, What are thefe Tubes themfelves made 
up of? I anfer, That thefe Tubes or Lympheduds, are not only 
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