( 30S5 ) 
deftituteof thefe Veins, fome of them yielding a milky juice^ 
hoc and fiery 3 not unlike lome of the Spurge kind^ or Eu- 
fhorbium. 
It might be expefted, that I fhould add/omethings at leaflij 
concerning the Original and Produftions of thefe Veins, if 
not an exadl defcription of them , the courfe of the juices in 
themj and their more immediate and primary ufes in the 
matter of Vegetation: But I muft acquaint you3 that(befides 
the feafon is not now proper to improve and verifie^ if ! had 
leifurCj the Obfervacions formerly noted, and that they were 
things thrown into my Adverfaria without other order, than 
thac^nothing fhould flip from me in the qaefl of Medica- 
ments, that might be of light ) although 1 fiad indeed many 
fcatcered particulars (befides them already delivered) con- 
cerning the Poficion, Order3Number,Capacity5Diftribucions5 
Differences, Figure, of thefe Veins; you will be pleafed to 
take in good part, if 1 think fitting to referve rhem uotil ths 
opportunicy of another Summers review: It feeming to me 
no fmall matterj to have fairly hinted the exiftence of chem 
to fuch curious perfons as fhall have the leifurejand find them- 
felves in better circumftances , than I can pretend to 3 as to 
thofe great advantages of Glaffes. Defigning. (^c. 
To conclude with the /?r^>w^?ryufe of x^ntit Veins ; which is^ 
in my opinion, to carry ihtSuccus nutritius of Plants^ becaufe^ 
where they are not, there is no Vegetation ; as it is feen, if an 
engrafted Branch or Arm be bared and ftripped off the clay^ 
i3c> in 'jum 5 all the courfe of Vegetation will appear to have 
been made only by the Sar/^^aod not by the Wcod^ that is 5 in 
the,place only^ where thefe veins are, A fecondary wiQ is the 
richfurnitureof our Shops ; for^ from x\\q{q Veins only it is , 
that all our Vegetable Drugs are extradied^ and an infifritemore 
might be had by a diligent enquiry ^ and fome eafy means, 
whicl> T have not unfuccefsfully pat io pradice 5 wicnefs the 
lflac\Refif)yl not long fioee fcnt you a fpecimen of*^ 
An 
