apparent andi latent colours of Vegetables are j?^^ An io- 
ftance whereof we may obferve in the feed-husks of Glajium^ 
and the Ufe Diers make of the leaves after due preparation- 
3* It is probable from the fame inftance, that we may learn from 
the colour of fome part of the Fruit or Seed^ what colour the 
Leaves of any Vegetable and the wholePlant might be made to 
yield for our ufe* 4» That the Latent colours of Vegetables are 
pr^exiftent^and not produced^from the fame inftance of Woad^ 
and like wife from this that the Milh juyce of I aSuca Silvefiris 
doth afford it felf a Serum. 5. That the change of colours 
in Flowersis gradual and conftanr, 6, That the colours of 
Flowersj which will not ftand with Lye, feem to be wholly 
deftroyed by it, and irrecoverable : Thus it happens io the Ex» 
periment 5 that one part of a Violet^eaf, Hpoo the afFufion of 
Lyejis changed very foon into yellow , and will never be revi- 
ved into a red by an Acid fait 5 but if another part of the fame 
leaf be ftill greenj it will be revived, 7, That the Drynefsfeems 
to be a meanSjif not offixwg^yGt bringing the Vegetable colour 
into a condition of not wholly and fuddainly perifhing by the 
otherwife deftroying Akaly.Q.lhat thole Plants or Animals that 
will ftrike different and yet vivid colours upon the affufion of 
different Salts^ and ftand^ as the Cc^hinel and Glajium 5 are pro^^ 
bably of all others to be reckoned as the beft Materials* 
It would have been a much fafer way, to have put thcfe In- 
ferences in the fafhion of ^£rts 5 but befides that I affirm no 
more but matter of faftj it is lawful for our encouragement ( as 
my Lord Bacon2iAv\{t$) tofet up refis by the way, and refrefh 
' our (elves with looking back^though perhaps we have not much 
advanced* You will be pleafed to excufe the little cohssrence 
that I have ufed in thefe notes, and attribute it to thereadioeS 
andaffeftion Ihaveto anfwer fuch inquiries as you put to me, 
I never yet did make this fubjed: any part of my bufinefs 5 but 
the defire I have to fearch after and examine the Medicinai 
^ qualities of things in Nature^hath by the by prefeoted me with 
fuch Vhmomtna^ as 1 was not willing to leave unnoted, nor to 
refufe them you, though ina confufed way 5 becaule you de- 
fire them^ To conclude, howimmethodical and barren thefe 
papers may (eem 5 yet the eonfideration of them hath lednse 
to a way of Fixing colours, which I willingly forbear to relate, 
until I may have an opportunity of (hewing the Experiment be^ 
Zz fore 
