SIZE, is also a sort of paint, varnish, or glue, used by painters and others. The shreds and parings of leather, parchment, or vellum, being boiled in water and strained, make size. This substance is much used in many trades. The manner of using size is to melt some of it over a gentle fire, and scraping as much whiting into it as will just colour it, let them be well incorporated together. After it
dries, melt the size again, and put more whiting and whiten the frames seven or eight times, letting it dry between each time; but before it be quite dry, between each washing with size, you must smooth and wet it over with a clean brush-pencil in fair water.