
Led. yy. of Plants. ae 277 
23. §. Laftly, When the Acid predominant to the Alkaline, and thé 
Sulphur to them both, a Blood-Red: which is the higheft and moft 
Sulphurions Colour in Nature, 
24. §. Fromthe Premifés, divers Rules do alfo refult for the ma- 
king of Tindfures, either for Adedicives, or for any other purpofer: 
25. g. I fhall only add one or two Notes. As firft, that of all 
Colours, Yellows are the moft fixed and unfading. As for inftance, if 
you drop either a Solution of Tartar, or of Spirit of Sulphur upon a 
Tinéure of the Yellow Flowers of Crowfoot, of Adonis, or of Saffron, 
neither of them will alter their Colovwr. Which fhewes the ftrength 
of moft Yeows, to refift all manner of impreffions from the Aer. 
26. §. Again, that the ufe of Salts, is not only to highten or 
deepen Colours, but alfo to fix and make them permanent. As for In- 
ftance, The Tinéfure of Clove-Fuly-Flowers, made either with Water 
or Spirit of Wine being expofed to the Aer; will often turn into a 
Blackifh Purple. But the addition of a few drops of Spirit of sulphur, 
doth not only bighten the Colour, but renders it ftable and permanent. 
27. §. Likewife, of Salts themfelves there is choice to be made. 
For there are fome, which although they fix the Colour, yet, will a 
little give, as we fay, and not hold throughly dry; as molt Lix7vzal 
Salts, and Stillations Acids. But there are fome Salts, which will 
not give intheleaft, as Alum, that in Lime-Water and fome others 5 
which latter, is fo far from being moyftened, that it is rather petrified 
by the Aer, For which reafonI take it to be one of the beft Liquors 
for a ftable and permanent Gree, and fome other Colours. 
28. §. Amongft all Water-Colours, the rareft, and moft difficult 
to make clear bright and permanent, isa Blew. There are many Flow- 
ers of anexcellent Blew, as thofe of Buglo/s, Lark-heeland others 5 but 
they eafily fade. And there are very few Flowers that will ftrike in- 
to a Blew by any Liquor; being almoft all changeable into Green; 
Purple or Red. Yet fome few there are, in which this Colour may be 
produced. As for inftance, the Flower of Lathyrws or Parfeverlafting 5 
which upon the affufion of Spirit of Harts-Horn is changed from a 
Peach, to as pure a Blew, as the belt Ultramarine : that which hitherto 
is, 1 think, wanting in Water Colours. Spirit of Harts Horn was the 
Liquor Tufed; but I queftion not, but that other Alkalies, and par- 
ticularly Lime-Water, will have the like Effect, and fo render it the 
more ftable, 
29. §. From what hath been faid, we may likewife be confirmed 
in the ufe of the already known Rwles, and directed unto others yet 
unknown, in order to the variation of the Colours of Flowers in their 
Growth. The effecting of this, by putting the Colour defired in the 
Flower, into the Body or Root of the Plant, is vainly talked of by 
fome: being fucha piece of cunning, as for the obteining a painted 
face, toeat good ftore of white and Red Lead, 
30. g. The beft known Rules are thefe Two; Firft, that the 
Seed be ufed above any other part, if the variation of the Colour be in- 
tended. One reafon whereof is, becaufe that part being but very fmall, 
the Tizdures of the Soyl will have the greater over proportion to thofe 
of the seed. Befides, the tender and Virgin Seed, being committed to 
the Soyl, will more eafily take any peculiar Tizéfare from it, then ae 
other 












































