To make a Water that will make this second vanish, and the first appear.

Take Rose-water, and Sorrel water, of each half a pint, which put into a Vial, and add to it two ounces of unslack'd Lime, and one of Orpine, both well beaten and mixed, stir∣ring all from time to time as the first, take off the clear by Inclination, after it has stood fifteen or twenty hours, throw off the Lees, and when you would make the second Ink vanish, and the first appear, put one or two drops upon the Line, and with a little Cotton make it run upon the place where your wri∣ting is, and it will appear.