Let the whole Composition be reduc'd to a very fine Powder, and mixt together: Two or three Grains of this Powder may be blown at
once into the Eye with a small Quill, Pipe of Straw, or Reed, as long as it is necessary; and the same Powder may also be steept in Ophthalmick Waters, to make a liquid Collyrium.
A Blue Collyrium.
Take a Pint of Water in which unslackt Lime has been quench'd, and a Dram of Sal Ammoniack pulveriz'd; mingle these Ingredients together in a Brass-Bason, and let 'em be infus'd during a whole Night; then filtrate the Liquor and keep it for use.
This Collyrium is one of the best Medicines that can be prepar'd for all manner of Diseases of the Eyes.