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TO powders and salts we may well joyne those things which the Chymists call Crocos, stours, sublimates, * 1.1 pre∣cipitates: The name of Crocos is given to some Medecines from the colour of Saffron, for Croci are nothing else but fine powders, or tinctures reduced into the forme of a powder of Saffron-colour: But principally they are called Crocos of Mettals, and Crocos of Mars.
Crocus mettalorum is nothing else but Antimony burnt with nitre, * 1.2 and reduced into powder of Saffron colour, next to this is that of Venus of Antimony Gouden as it is called. Of which the Institutions may be seene.
Crocus of Mars is prepared severall wayes, which may also be seen in the Institutions.
To these we may well referr that which is called earth of vitrioll, whose preparation is taught in the Institutions.
Croci what.
Crocus mettalo∣rum.