will In like manner ftrike a Yellow with an Akaly. 5*That what 
Flowers are already yelloWj are not much changed, if at alljby 
an Alcaly or Urinom Spirit. 4. The Blew feed»husks of Glafium 
Sjilveflre old^gathered and dry^diluted with watcr,ftain a Blew, 
which upon the afFufion of Lye ftriks a Green, which Green 
cr Blew being coHched with the Oyl of Vitriol dyes a Purple 5 
2II thefe three colours ftand^ 5. On the tops of fungus tuhuloi 
y^^'/o called by M.IFr^j' in his late Catalogue of the Plants of 
England^diXQ certain red knots ; thefejUpon the affufion of Lye, 
will ftrike a Purple^and ftand. 
As for the Latent Culours in Vegetables and Animals; to be 
difcovered to us by the affufion of Salts 5 they ^likewile, no 
doubt, are very many* We will fetdown only a fewinftan- 
cesinboth kinds, which have not been, that we know of, dif- 
covered or taken notice of by others. Latent Vegetable coe 
lours, I ♦The Milky juice of LaUuca Sylvefirh cojia Jpinofa^ and 
Sonchm afper «6^ Uvk^ upon the affufion of Lye, will ftrike a 
vivid flame colour or Crimfon^and after fome time quite dege- 
nerate into a dirty yellow* 2.Thc Milk of Cataputia minor ^ upe 
on the affufion of Lye, efpecially if it be drawn with a knife, 
and hath any time ftood wpon the blade of it,will ftrike a Purple 
or Bloud«red colour^and by and by change into an ignoble yel- 
low* Latent Animal dyts, i. The common Hawthorn- Cater* 
pillar will ftrike a Purple or Carnation with Lye , and ftand.' 
a.The heads of Beetles and Pifmires, &c. will with Lye ftrike 
the fame Carnation- colour,and ftand. 3. The Amber- coloured 
Scolopendra will give with lye a moft beautiful and plcalant As 
zureox Ametfyjiine^ and ftand* 
LaJily^SMQ might confider the F/a:/>^ of colours for Life 5 but 
we are willing to leave this to more experienced per* 
fons^asalfo the Philofophizing on the particulars we have pro* 
ducedjto better Heads. Some obvious Inferences we may ven« 
ture to take notice of 5 i. That in all the Inftances above men-^ 
tionedjwhether Vegetable or Animal, there is not one colour 
truly fixed,however there may,I conceive, be (bme ufemade of 
them,as they are- Ifay^trufyfixed, that is, proof of Salt and 
Fire 5 for,what feem to Jiand and be Lye-proofs are either whoh 
ly deftroyed by a different Salt, or changed into a much diffe- 
rent colour 5 which muft needs prove a ftain and blemi(h,when 
it fliall happen in the ufe of any gf thernt 2^ That both the 
apparent 
