Young's Demonstrative Translation of Scientific Secrets Part 30

Another.--Lake and yellow, shaded with lake and Prussian blue.

Cloud Colour.--Light masticot, or lake and white, shaded with blue verditer.

Another.--Constant white and Indian ink, and a little vermilion.

Another.--White, with a little lake and blue verditer, make a good cloud colour for that part next the horizon.

Crimson.--Lake and white, with a little vermilion, shaded with lake and carmine.

Flame Colour.--Vermilion and orpiment, heightened with white.

Another.--Gamboge, shaded with minium and red lead.

Flesh Colour.--Ceruse, red lead, and lake, for a swarthy complexion, and yellow ochre.

Another.--Constant white and a little carmine, shaded with Spanish liquorice washed with carmine.

French Green.--Light pink and Dutch bice, shaded with green pink.

Gla.s.s Grey.--Ceruse, with a little blue of any kind.

Hair Colour.--Masticot, ochre, umber, ceruse, and cherry-stone black.

Lead Colour.--Indigo and white.

Light Blue.--Blue bice, heightened with flake white.

Another.--Blue verditer, and white of any sort, well ground.

Light Green.--Pink, smalt, and white.

Another.--Blue verditer and gamboge.

Another.--Gamboge and verdigris. This is chiefly used for the ground colours of trees, fields, &c.

Lion Tawney.--Red lead and masticot, shaded with umber.

Murrey.--Lake and white lead.

Orange.--Red lead and a little masticot, shaded with umber.

Orange Tawney.--Lake, light pink, a little masticot, shaded with gall-stone and lake.

Pearl Colour.--Carmine, a little white, shaded with lake.

Popinjay Green.--Green and masticot; or pink and a little indigo, shaded with indigo.

Purple.--Indigo, Spanish brown, and white; or blue bice, red and white lead; or blue bice and lake.

Russet.--Cherry-stone black and white.

Scarlet.--Red lead and lake, with or without vermilion.

Sea Green.--Bice, pink and white, shaded with pink.

Sky Colour.--Light masticot and white, for the lowest and lightest parts; second, red ink and white; third, blue bice and white; fourth, blue bice alone. These are all to be softened into one another at the edges, so as not to appear harsh.

Sky Colour for Drapery.--Blue bice and ceruse, or ultramarine and white, shaded with indigo.

Straw Colour.--Masticot and a very little lake, shaded with Dutch pink.

Yellow Colour.--Indigo, white, and lake; or fine Dutch bice and lake, shaded with Indigo; or litmus smalt and bice, the latter predominant.

Water.--Blue and white, shaded with blue, and heightened with white.

To prevent Colours from Cracking.--Boil 2 ozs. of the best and clearest glue, with 1 pint of clear water, and a 1/2 oz. of alum, till dissolved. With this temper those colours intended for the sky.

To make a Solution of Gum.--Dissolve 1 oz. of white gum arabic, and a 1/2 oz. of double refined sugar, in a quart of spring water; strain it through a piece of muslin, and bottle it to keep it free from dust.

To keep Flies from the Work.--Having prepared the gum water for the colours, add a little coloquintida.

To prepare Alum Water.--Take 4 ozs. of alum, and 1 pint of spring water; boil it till the alum is thoroughly dissolved, and then filter it through blotting-paper.

To use Alum Water.--Before laying on the colours, take some of this water, hot, and with a sponge wet the back of the paper, which, if not good, must be wet three or four times, letting the paper dry each time before wetting it again. This will prevent the sinking of the colours, and give them additional l.u.s.tre.

To make Lime Water.--Put unslacked lime in a well-glazed pan; cover it with pure water, and let it remain for one day. Then strain off the water. This water will change sap-green into blue.

553. TO PREPARE WASH COLOURS FOR MAPS

Blue.--Dilute Saxon blue with water; or to the solution of litmus add distilled vinegar.

Green.--Dissolve verdigris in distilled water and add gum arabic. Or, dissolve sap-green in water and add gum.

Red.--Steep Brazil dust in vinegar, with alum. Or, dissolve litmus in water and add spirit of wine. Or, steep cochineal in water, strain, and add gum.

Yellow.--Dissolve gamboge in water; or French berries steeped in water, the liquor strained, and gum arabic added.

554. TO MIX WATER-COLOURS FOR ANIMALS

Horses, black.--Black lightly laid on, shaded with Keating's black and bistre, heightened with masticot.

Horses, chestnut brown.--Red ochre and black mixed together, shaded with black, heightened with red ochre and white.

Horses, grey.--Black and white mixed, shaded with black, white, and bistre; heightened with pure water.

Lions.--Colour much in the same manner as horses, adding lake in the ground colour.