eriment, _Of making a Green by nine Kinds of
Compositions_ (from 231 to 236.) _And some Deductions from them against the
necessity of recurring to Substantial forms and Hypostatical principles for
the production of Colours_ (from 237 to 240.)

_The eighteenth_ Experiment, _Of several Compositions of Blew and Yellow
which produce not a Green, and of the production of a Green by other
Colours_ (241, 242.)

_The nineteenth_ Experiment, _contains several instances of producing
Colours, without the alteration of any Hypostatical principle, by the
Prism, Bubbles, and Feathers_ ( from 242 to 245.)

_The twentieth_ Experiment _Of turning the Blew of Violets into a Red by
Acid Salts, and to a Green by Alcalizate (245, 246.) and the use of it for
Investigating the Nature of Salts_ (247, 248.)

_The one and twentieth_ Experiment, _of the same Changes effected by the
same means on the Blew Tinctures of Corn-flowers_ (249, 250.) _And some
Restrictions to shew it not to be so general a propriety as one might
imagine_ (251.)

_The twenty second_ Experiment, _of turning a Solution of Verdigrease into
a Blew, with Alcalizate and Urinous Salts_ (252, 253, 254.)

_The twenty third_ Experiment, _of taking away the Colour of Roses with the
Steams of Sulphur, and heightning them with the Steams Condens'd into Oyl
of Sulphur_ per Campanam (254, 255.)

_The twenty fourth_ Experiment, _of Tinging a great quantity of Liquor with
a very little Ting'd Substance, Instanced in_ Cochineel (from 255 to 257.)

_The twenty fifth_ Experiment, _of the more general use of Alcalizate and
Sulphureous Salts in the Tinctures of Vegetables, further Instanced in the
Tincture of Privet Berries, and of the Flowers of Mesereon and Pease_ (from
257 to 259.) _An_ Annotation, _shewing that of the three Hypostatical
principles, Salt according to_ Paracelsus _is the most active about
Colours_ (from 259 to 261.) _Some things Precursory premis'd to three
several Instances next following, against the fore-mention'd Operations of
Salts_ (261, 262.)

_The twenty sixth_ Experiment, _containing Trials with Acid and Sulphureous
Salts on the Red Tinctures of Clove-july-flowers, Buckthorn Berries,
Red-Roses, Brasil_, &c. (262, 263.)

_The twenty seventh_ Experiment, _of the changes of the Colour of Jasmin
flowers, and Snow drops, by Alcalizate and Sulphureous Salts_ (263, 264.)

_The twenty eighth_ Experiment, _of other differing Effects on Mary-golds,
Prim-roses, and