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Show The Colours Led. V. Led.V. SpiritofHarts Horn droped upona Timdure of the Flower 6. §. Spirit of Harts Horn droped on moft green Leavs doth not The like Effects have Ag. Calcis, and spirit of =i S, Armoniac. 7. §. 279 23. §. Laftly, When the Acid predominant to the Alkaline, and the Sulphur to them both, a Blood-Red: which is the higheft and moft of Lascded and Borage turn themto a verdegree/é Green. change them at all. of“Planis, Thefe Experiments feemto confirm, That it is fome Alkaline Sulphurious Colour in Nature, 24. g. Fromthe Premifés; divers Rules do alfo refult for the making of Tinéures, either for Medicines, or for anyother purpofes, 25. g. I thall only add one or two Notes. As firft, that of al] or other like Sult in the Aer, which is predominant in the produétion of Green inthe Leavs of Plants. 8. §. Salt of Turtar droped on the white Flowers of Daifj, changeth them intoa /ight Gree. Whichasit further confirms the aforefaid you drop either a Solution of Tartar, or of Spirit of sulphur upon a LinGure of the Yellow Flowers of Crowfoot, of Adonis, or of Saffron, neither of them will alter their Colour. Which fhewes the ftrength Pofition ; fo likewife argues, That Whitene/s in Flowers, is not always of moft YeZows, to refift all manner of impreffions from the Aer. Yellow, Green, Red or Blew Tindures, deepen Colours, but alfo to fix and make them permanent. As for Ins ftance, The Tindfure of Clove-July-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 ofSpirit of sulphur; doth notonly highten the Coloxr, but rendersit {table and permanent, from the defect of TinGure: but that there may be Wavte, as well as 9. §. Spirit of Sulphur droped on the green Leavs of Adonis Flower, Everlasting Peafe, and Holy Oak, turns them all Yellow. i 10. §. Spirit of Sulphur on a Tinéture of Saffron changethit not. 11. §. Spirit of Sulphur on the Yellow Flower of Crowfoot alters them not. Neither are they changed by the Affufion of Alkalies. 12. g. So that it feemeth, that in all YeVows, the Sulphureous Acid and Alkaline Parts are all more equal. 13. §. Spirit of Sulphur on a Tindure of Violets turns it from Blew toa true Lacke, or midle Crimfon, 14. §. Spirit of Sulphur upon aTinGure of Clove-Fuly-Flowers makes a bright blood Red. Into thelike Co/our, it hightens a Timdure of Red Rofes. _ g. Sothat as Alkalys, or other <Avalogous Salts, are predomi- Colours, Yellows are the moft fixed and unfading. 26. §. As for inftance, if Again, that the ufe of Salts, 1s not only to highten or 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 5 as moft Lixivral Salts, and Stillations Acids. But there are fome Salts, which will not give inthe leaft, as Afwm, that in Liwe-Water and fomeothers 5 whichlatter, is fo far from being moyftened, thatit is rather petrified by the Aer. For which reafonI take it to be one of the belt Liquors for a {table and permanent Green, and fomeother Colours. 28. §. Amongft all Water-Colours, the rareft, and moft difficult nant in Greens, fo Acids in Reds, efpecially in the brighter Reds, in to make clear bright and permanent,isa Blew. the Leavs and Flowers of Plants. Hence it is, that Spirit of Nitre droped upon the Blew Flower of Ladies Looking-Glafs, Larkspur, Bo- ers of an excellent Blew, as thofe of Buglofs, Lark-heeland others ; but rage, turns them all Red, fe. into the Red of Common Lychnis. But (which is particularly to be noted) being droped on the faid Red Flowers of Lychnis, alters them little or nothing: becaufe, that very Colour istherein produced by a copious admixture ofthe like Principle. ¢. The Summ therefore of what hath now been faid, of the Canfes of Vegetable Colours, isthis: That while their Sulphur and Saline Principles, only {wim together, and are notas yet united into one Precipitate, no Colour refults from them, but the Comtents are rather Limpid 5 as ufually in the Root, and many other Pareschymows Parts. 17. §. Whenthey are united, and the Alkaline are predominant, they produce a Green. 18. g. When the Sulphur and the Alkaline are more equal, they produce a Tauny. : 19. §. 20. g. Whenthe Sulphur, Acid and Alkaline, there a Yellow. When the Sulphur predominant, and the Acid and Alkaline equal, there a Blew. : 21. §. Whenthe Sulphur and Acid are predominant to the Alkaline, then a Purple. ; 22. §. When the Sulphur predominant to the Alkaline and the Acid tothem both, a Scarlet, 23. $ There are many Flow: they eafily fade. And there are very few Flowers thatwill ftrike in= to a Blewby any Liquor; being almoft all changeable into Green, Purple or Red. Yet fome few there are, in which this Colour may be produced. Asfor inftance, the Flower of Lathyrus or Parfeverlafting 5 which upon the affufion of Spirit of Harts-Horz is changed from a Peach, to as pure a Blew, as the beft Ultramarine : that which hitherto is, 1 think, wanting in Water Colours. Spirit of Harts Horn was the Liquor I vfeds but I queftion not, but that other Alkalies, and pars ticularly Lzme-Water, will have the like Effect, and fo render it the moreftable, 29. §. From what hath been faid, we may likewife be confirmed in the ufe of the already known Rules, and directed unto others yet unknown, in orderto the variation of the Colours of Flowers in their’ Growth. Theeffecting 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 fuch a piece of cunning, as for the obteining a painted face, to eat 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 Tindures of the Soyl will have the greater over proportion to thofe of the seed. Befides, the tender and Virgin Seed, being committed to the Soy], will moreeafily take any peculiar Ziméfure from it, ie other |