Under the term "engraving-inks" will be included all inks employed for engravers, whether on stone, wood, or metal.

Black

(a) Coal-tar, 100 parts; lampblack, 36; Prussian blue, 10; glycerine, 10. This ink may be used for lithography, chromo-lithography, autography, etc. (6) To the varnish obtained by boiling linseed-oil, as for printing-ink, is added as much best calcined Paris black as can be ground up with it. This is a litho-printing-ink. For copper-plate printing, the Paris black is replaced by lampblack.

(c) 8 oz. mastic in tears 12 oz. shellac, 1 oz. Venice turpentine; melt together; add 1 lb. wax; 6 oz. tallow;.when they are dissolved, add 6 oz. hard tallow soap-shavings, and mix; then add 4 oz. lampblack. Mix all well together, let cool slightly, pour into moulds, and cut into cakes of convenient size. This ink is suited for writing on stones, (d) To render (c) liquid, for writing and drawing on transfer-paper it is warmed in a pot, and then rubbed down with soft water (rain or distilled water). The pen should be dipped into oil, and wiped, before use. (e) Pure white wax, 4 parts (best quality); white tallow, 2 parts; gum lac, 2 parts; lampblack, made from burnt rags, 1 part; oil copal varnish, 1 part. Melt the wax over a slow fire, then add gum lac crushed small, then mix in the soap in shavings, then the oil varnish for cakes. When wanted, thin with water from the cake, and for crayons cut from the paint,which must be brittle if it is good.

Coloured

Coloured inks are made by adding to the varnish already described certain pigments, of which the principal are as follows: -

Blue

2 oz. celestial blue, 3 oz. marine blue.

Brown

2 oz. burnt umber, 1 oz. rose-pink.

Green

2 oz. mineral green, 3 oz. chrome-green.

Lilac

1 oz. Prussian blue, 2 oz. Chinese red.

Orange

2 oz. orange-red, 1 oz. flake-white, ground up with Canada balsam, and omitting the linseed-oil varnish.

Pink

2 oz. mineral pink, 1 oz. satin-white.

Bed

5 oz. mineral orange-red, 2 oz. Chinese red.