Facts about processes, pigments, and vehicles : a manual for art students (1895)
Laurie, A. P. (Arthur Pillans), 1861-1949 · London ; New York : Macmillan · leaf 89
72 PROCESSES, PIGMENTS, AND VEHICLES second flask and heat it strongly over a flame till all the copal is melted. Then begin to add the hot oil little by little, stirring vigorously by swinging the flask (it can be held with a piece of cloth round the neck). When about three times as much oil has… … milky in appearance, MAKINQ VARNISH but after the heating has been continued for a short time, the drop on cooling will remain clear. The varnish is now finished, remove it from the flame, let it cool a few minutes, and add little by little, with vigorous shaking, about an equal volume of turps.…
Painting · Artists' materials · Color
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
