The twenty eighth Experiment, of other differing Effects on Mary-golds, Prim-roses, and fresh Madder ([265].) with an Admonition, that these Salts may have differing Effects in the changing of the tinctures of divers other Vegetables ([266], [267].)
The twenty ninth Experiment, of the differing Effects of these Salts on Ripe and Unripe Juices, instanced in Black-berries, and the Juices of Roses (from [267] to [270].) Two reasons, why the Author added this twenty ninth Experiment, the last of which is confirm'd by an Instance of Mr. Parkinson, consonant to the Confession of the Makers of such Colours ([272].)
The thirtieth Experiment, of several changes in Colours by Digestion, exemplify'd by an Amalgam of
and
and by Spirit of Harts-horn. And (to such as believe it) by the changes of the Elixir.
The thirty first Experiment, shewing that most Tinctures drawn by Digestion Incline to a Red, instanc'd in Jalap, Guaicum, Amber, Benzoin, Sulphur, Antimony, &c. ([276], [277].)
The thirty second Experiment, That some Reds with Diluting turn Yellow, others not, exemplify'd by the Tincture of Cochineel, and by Balsam of Sulphur, Tinctures of Amber, &c. ([277], [278], [279].)
The thirty third Experiment, of a Red Tincture of Saccarum