( 3053 ) 
very clearly fhew themlelves to an attentive view to be di- 
ftihft from Fibres , obfervable in the Parenchyma of the fsme 
Cortical body together with themfelves^ the Milky juice ftill 
rifing^^^^/ and notf« any fibre, A!fo in the like cut of a 
Burdoc\m June:, ^^e like Juice fpringson this and on that fide 
of the f^^^V of the Woody circle, thatis, in the ComW body 
zndpth only. Againjwhere there is no pith, there is none of 
this juice to be obferved ^ and confequently none of thefe 
f^ins as in the Roots of plants^ and Trunks of trees j but ever 
in the^^r/^of either. I need not here enumerate the many 
PlantSj wherein thefe particulars are moft plainly obfervablej 
z^m Sphondylium^Cicutaria^mzviy of tliQ Thiftk kind^ 
Further, Neither are they probably of the number of the 
Piresy defcribed by our Author in the f{?r^/r^/ body , ox Pith 
Not furely of thofe Pores extended by the breadth ^ becaufe 
the courfeof the juice in thefe veffels jis byjthe length of the 
plant ; as I have foraetimes very plainly traced io the pith of 
a dryed Fennelftalk,^ following them by difledion quite 
through the length of the pith. It remains, that, if Pores^ they 
are of thofe pores of ihQ C&rtical body ^ that are fuppofed to 
be extended by the length thereof which yet feems ( to me 
at leaft) not enough, but we think them veffels invefled with 
their own proper membranes^ analogous to the Veins of our 
Humane body • for thefe reafons : t. Becaufe they are to be 
found in the P^V^, and iometime in theCor^/W body of a plant, 
not included within tbt common Tunicle of Any Fibres ^ as is 
above noted : ( that Fibres, or the Seminal root are cloathed, 
is moft plain in fome plants 5 as in Fern and Geranium Batra^ 
choides , the Fibres ot the former are coated , at leaft in fome 
parts of the plant, with a black skin^in the7^/f/^r likewife with 
a red one :) And in thefe cafes, had they not, I fay, their own 
propermeinbranes , we fee no caufe , why the very porous 
and ^pongy body of the Pith and Cortex ^ fliould not be in 
all places filled ahkc with the juice, and nor rife (as moil 
plainly it doth) in a few determinate and fet places only, that 
is, according to the pofition and order of thefe vefiels. 
2. Again the Experiment I made . which von ^« / 
were plealed to pubhih concerning the eftect p,ana/, & 2123. 
Dddd 2 of 
