The following recipes for coloured papers are mainly derived from Dunbar.

Amber

(1) For 400 lb. dry paper. 400 lb. Oran esparto, 1/2 lb. chrome yellow, mixed in the engine one hour; 1 pint iron liquor, 20 lb. alum, 6 pails size.

(2) Fine Amber Writings

For 300 lb. dry paper. Medium Spanish esparto, 1/2; F. F. rags, 1/4; thirds, 1/4; 6 1/2 oz. nitrate of lead, 3 oz. bichromate of potash, 11 oz. Venetian red strained through a silk bag, 30 lb. alum, 8 pails size.

Blue

(1) Aniline Blue

For 250 lb. dry paper. No. 4 stuff, full bleached; 5 pails size, 15 lb. alum, 3 oz. aniline blue, 1/6 oz. diamond fuchsine.

(2) Aniline Blue, Deep Shade

For 250 lb. dry paper. No. 4 stuff, full bleached; 5 pails size, 20 lb. alum, 4 oz. aniline blue, 1/6 oz. diamond fuchsine.

(3) Deep Aniline Blue

- For 250 lb. dry paper. - No. 3 stuff, full bleached; 6 pails size, 20 lb. alum, 4 1/2 oz. aniline blue, 1/6 oz. diamond fuchsine.

(4) Aniline Blue, Deep Colour

For 250 lb. dry paper. No. 4 stuff, full bleached; 4 pails size, 15 lb. alum, 2 oz. aniline blue, 1/6oz. diamond fuchsine, 6 oz. Berlin blue.

(5) Deep Aniline Blue

For 250 lb. dry paper. No. 4 stuff, full bleached; 5 pails size, 20 lb. alum, 9 lb. Paris blue, 3 1/2 oz. aniline blue, 3 oz. diamond fuchsine. Presents a fine clear colour, very deep and uniform.

(6) Berlin Blue

For 250 lb. dry paper. No. 4 stuff, half bleached; 5 pails size, 20 lb. alum, 1/2 oz. fuchsine, 5 lb. Paris blue.

(7) Blue Tissue

For 200 lb. dry paper. Rope stuff,1/2, good sailcloth, 1/2; 2 lb. ultramarine, B.B.A.C., 5 gills Brazil-wood dye.

(8) Fine Deep Blue

For 400 lb. dry paper. Oran esparto; 1 lb. crystal soda, 10 lb. prussiate of potash, 3 lb. green copperas dissolved in 4 pails hot water, 4 qt. iron liquor, 1 oz. magenta dissolved in one pail of hot water, 25 lb. alum.

(9) Deep Paris Blue

For 250 lb. dry paper. No. 4 stuff, half bleached; 4 pails size, 20 lb. alum, 2 lb. logwood extract, 6 lb. Berlin or Paris blue, 2 pints cochineal.

Brown

(1) Soluble Brown

For 250 lb. dry paper. No. 4 stuff, half bleached; 5 pails size, 20 lb. alum, 15 lb. soluble brown. This colouring matter must be carefully strained into the engine. It is the best substitute for catechu-dyed papers, and has all the characteristics of catechu, with the advantage of being much cheaper.

(2) Catechu Brown

For 250 lb. dry paper. No. 4 stuff, unbleached; 4 pails size, 20 lb. alum, 12 pails catechu, 6 lb. bichromate, 3 lb. crystal soda.

(3) Catechu Brown

For 250 lb. dry paper. No. 4 stuff, full bleached; 4 1/2 lb. green copperas, 4 pails size, 3 pails catechu, 20 lb. alum, 3 1/2 lb. bichromate.

(4) Catechu Brown, Deep Colour

For 150 lb. dry paper. No. 4 stuff, unbleached; 3 pails size, 10 lb. alum, 3 pails catechu, 2 lb. green copperas, 3 lb. bichromate.

(5) Catechu Brown

For 250 lb. dry paper. No. 4 stuff, half bleached; 4 pails size, 4 pails catechu, 20 lb. alum, 1 1/2 lb. bichromate.

(6) Catechu Brown Wrapping

For 250 lb. dry paper. Hemp bagging, 1/2; No. 4 stuff, 1/2; 7 pails catechu, 5 pails size, 15 lb. alum, 3 lb. bichromate.

Buff

(1) For 250 lb. dry paper. No. 4 stuff; 60 lb. yellow wood, 4 pails size, 20 lb. alum, 13 lb. yellow ochre, 10 oz. Venetian red, 1 gill Brazil-wood dye.

(2) Light Buff

For 400 lb. dry paper. 400 lb. Oran esparto, 4 lb. green copperas, 4 oz. sugar of lead, 3 lb. bichromate of potash, 15 lb. alum, 5 pails size.

Chocolate

For 400 lb. dry paper. 400 lb. Oran esparto, 37 lb. Venetian red, 3 lb. catechu, 5 lb. bluestone, 5 lb. green copperas, 4 lb. ultramarine - all 1 hour apart; 20 lb. alum, 7 pails size.

Crowfoot Colour To Paper Pulp

The colour of the crowfoot is one of the most agreeable in paper manufacture, but it is also very difficult to obtain in all the richness and brilliancy of the flower's hue. As in the case of many other colours for paper, the operation requires to be divided into two parts. With every 220 lb. of dry pulp the following process is observed: - On the one hand, 26 1/2 lb. acetate of lead are boiled separately in about 8 gal. water, and 8f lb. bichromate of potash in 4 1/2 gal. water on the other. When the salts are completely dissolved, the same quantity of cold water is added to each solution as was used before; it is stirred, and the solution of acetate of lead is poured into that of the bichromate, the whole being stirred as the mixing takes place. The mixture is used in two separate basins, or troughs, and produces the first colouring of the pulp. Supposing, as is to be expected, a uniform tint has been obtained, about 3 1/2 pints of a yellow-orange colour are added, which are prepared in the following manner: 5 1/2 gal. caustic soda lye, marking 20° B., are taken, to which are added 23 lb. acetate of lead, and 7 1/2 lb. bichromate of potash, mixed dry, the whole being boiled for 1/2 hour.

From this are taken the 3 1/2 pints mentioned above for the second colouring. (La Gaceta Industrial.)

Fawn

(1) For 250 lb. dry paper. No. 4 stuff; 4 pails size, 20 lb. alum, 2 lb. green copperas, 2 lb. crystal soda. 1 1/2 lb. Venetian red.

(2) For 250 lb. dry paper. No. 4 stuff; 20 lb. chemical wood pulp, 5 oz. ultramarine, 1 lb. Venetian red, 4 lb. French yellow ochre.

Green

(1) For 250 lb. dry paper. No. 4 stuff; 60 lb. mechanical wood pulp, 2 1/2 lb. bichromate 15 minutes later, 6 lb. sugar of lead 15 minutes later, 7 oz. Paris blue, 4 pails size, 15 lb. alum.

(2) Medium Deep Shade

For 250 lb. dry paper. No. 4 stuff; 60 lb. mechanical wood pulp, 5 pails size, 20 lb. alum, 2 1/2 lb. bichromate 15 minutes later, 6 lb. sugar of lead 15 minutes later, 1 1/2 lb. Paris blue.

(3) Deep Clear Tint

For 250 lb. dry paper. No. 3 stuff; 1 1/2 lb. bichromate, 3 lb. sugar of lead 15 minutes later, 2 lb. Paris blue 10 minutes kter, 5 pails size, 20 lb. alum.