_The eleventh_ Experiment, _Of certain pieces of Glass that afforded this Variety of Colours; And of the way of so Tinging any Plate of Glass with Silver_ (from 216 to 219). _The twelfth_ Experiment, _Of the Mixing and Tempering of Painters Pigments_ (219, 220, 221). _The thirteenth_ Experiment, _Of compounding several Colours by Trajecting the Sun-beams through Ting'd Glasses_ (from 221 to 224). _The fourteenth_ Experiment, _Of the Compounding of Real and Phantastical Colours, and the Results_ (224, 225, 226.) _as also the same of Phantastical Colours_ (226, 227.) _The fifteenth_ Experiment, _Of Varying the Trajected_ Iris _by a Colour'd Prism_ (228, 229.) _The sixteenth_ Experiment, _Of the Red fumes of Spirit of_ Nitre, _and, the resembling Redness of the Horizontal Sun-beams_ (230, 231.) _The seventeenth_ Experiment, _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.)