CIII. A secret to draw without either ink or pencil.CIV. To make an imitation of enamel on tin, for chimney, branches, &c.CV. A very valuable secret to make exceeding good crayons, as bard as red chalk.

Valuable Secrets concerning Arts and Trades:
or Approved Directions, from the best Artists, for the Various Methods...
Printed by Thomas Hubbard,
Norwich, 1795Chap. V. Secrets concerning colours & painting.

§ VIII. Preparations of colours of all sorts for oil, water, and crayons.


CIII. A secret to draw without either ink or pencil.

Rub a sheet of paper with tripoly. Then, with any blunt blunt point, form your drawing on it. Whatever you trace will be visible.


CIV. To make an imitation of enamel on tin, for chimney, branches, &c.

Get a sheet of block-tin very clean, and cut it in the form, shape, and figure, you chuse to make your flowers and other things. Grind what colours you propose to make use of, with clean water, and each separately, then let them dry. When you want to employ them, dilute them, each apart, with liquid varnish, and lay them on with the brush. Set the work in the open air for fear the colours should run, and when they are a little thickened and consolidated, finish drying them before a gentle fire.


CV. A very valuable secret to make exceeding good crayons, as hard as red chalk. This secret is of the discovery of Prince Robert, brother the prince Palatin.

Grind, on the stone, some tobacco pipe clay, with, common water, so as to make a paste of it. Then take separately each colour, and grind them, when dry, on the stone, so fine as to sift them through a silk sieve. Mix, of each of the colours, with your first white paste, as much as will make it of a higher or paler hue, and embody the whole with a little common honey and gum-arabic water.

Note. You must be attentive to make crayons of various degrees of hues in each colour, for the chiaros and oscuros, or lights and shades. Then you roll each crayon between two boards very clean, and set them to dry on a sheet of paper for two days in the shade. To complete their drying lay them before the fire, or in the sun: and then you may use them with satisfaction. It is, it must be confessed, a very valuable composition.