CHAP. XVIII.
To Paint in Frisco.
THis way requireth not only a quick and ready Hand, but also a profound Judg∣ment; and that for these Reasons: First, Because the Painter must begin no more in a Day than he can finish; for this kind of Painting is to be done upon the Wall, or Ceiling, whilst the Lime [ 40] is moist and fresh, so that what remaineth at that time unfinished will be lost, by reason of the drying of the Lime; as also the Wall will gather a certain hard Crust, which either vvith the Cold, Frost, or Heat, vvill destroy that part vvhich is not finished. And, Secondly, Because the Colours shew after one fashion vvhen they are first laid on, and the Wall remaineth wet, and of another vvhen they are dry. The Colours that are used in this manner of Work, are only such as are [ 50] made of Earths; for such as are made of Mine∣rals are obnoxious, and will spoil the Work.
Now for preparing your Colours, they are to be Ground, as formerly hath been shewed, vvith fair Water, and are to be tempered vvith the same; for if tempered vvith Size, or Gum, the Wall vvill not continue its clearness; and be∣sides, the Colours in a short time vvill decay, and turn Black.
If you mix your Colours vvith the Whites of Eggs beaten to an Oyl, it is very good to preserve them.
Let your Pencils be long, and soft, that your Work may be smooth: And let your Pencils and Brushes be full of Colour, to flow freely from them.