

276 The (olours Led. V. 
5. §. Spirit of Harts Horn droped upona Tindure of the Flower 
of Lark-heel and Borage turn them to a verdegree/é Green. 
6. §. Spirit of Harts Horn droped on moft green Leavs doth not 
change themat all. The like Effects have Aq. Calcis, and spirit of 
S. Armoniac. 
7. §. Thefe Experiments {eemto confirm, That it is fome Alkaline 
or other like Salt in the Aer, which is predominant in the produétion 
of Greenin the Leavs of Plants. 
8. §. Salt of Tartar droped on the white Flowers of Daifj, chang- 
eth them into a fight Gree. Which as it further confirms the aforefaid 
Pofition 5 fo likewife argues, That Whiteneft in Flowers, is not always 
from the defect of Tindure: but that there may be White, as well as 
Yellow, Green, Red or Blew Tindures. ; 
9. §. Spirit of Sulphur droped on the green Leavs of Adonis Flower, 
Everlasting Peafe, and Holy Oak, turns them all Yellow. 
To. §. Spirit of Sulphur on a Tincture of Saffron changeth it not. 
11. §. Spirit of Sulphur on the Yelow Flower of Crowfoot alters 
them not, Neither are they changed by the Affifion of Alkalies. 
12. §. So that it feemeth, that in all YeVows, the Sulphureous Acid 
and Alkaline Parts are all more equal. i 
13. §. Spirit of sulphur on a Tinéture of Violets turns it from Blew 
toa true Lacke, or midle Crimfon, 
14. §. Spirit of Sulphur upon a Tinéure of Clove-Fuly-Flowers makes 
a bright blood Red. Into the like Colour, it hightens a Tindure of Red 
Rofes. 
a §. Sothat as Alkalys, or other Avalogous Salts, are predomi- 
nant in Greens, fo Acids in Reds, efpecially in the brighter Reds, in 
the Leavs and Flowers of Plants. Hence it is, that Spirit of Nitre 
droped upon the Blew Flower of Ladies Looking-Gla/i, Larkspur, Bo- 
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 : becaufé, that very 
Colour is therein produced by a copious admixture of the like Prix- 
ciple. 
ae §. The Summ therefore of what hath now been faid, of the 
Caufes of Vegetable Colours, isthis: That while their Sulphur and Saline 
Principles, only fwim together, and are not as yet united into one Pre- 
cipitate, no Colour refults from them, but the Contents are rather 
Limpid as ufvally in the Root, and many other Parenchyusous 
Parts. 
17. §. When they are united, and the Alkaline are predominant, 
they produce a Green, 
18. §. When the Sulphur and the Alkaline are more equal, they 
produce a Tauzy. 
19. §. When the Sulphur, Acid and Alkaline, there a Yellow. 
20. §. 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. §. 










