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DYEING AND CALICO PRINTING.

addition of a few pounds of common salt will assist in rendering the coloureven, especially if the yarn be spun of new wool.

Aniline Green.

The crystals of aniline green are red-coloured in dry state; the colour is notso brilliant from aniline crystals that have been kept even a short period oftime. The dye is, therefore, best prepared immediately before use ; and thefollowing method maybe adopted, as recommended by Dr. Reimann (“Hand-book of Aniline Colours,” pp. 77 to 133). 3 lbs. of magenta crystals are mixedwith 3 lbs. of sulphuric acid and 1 lb. of water. To this solution, when cold,11 lbs. of aldehyde are added, and the whole well mixed upon a water-bath untilthe liquid, when dropped into acidulated water, exhibits a fine blue colour. Thesolution may then be poured into 8 gallons of boiling water, to which is addedthe solution of 3 lbs. of hyposulphite of soda. Boil this liquid for a fewminutes, and filter through a cotton cloth. A fine green dye passes throughthe filter as the filtrate, and a dark blue-gray residue remains. Coloured silkwith aniline green, when exposed to 300° of dry heat, changes to blue, butcoloured wool suffers no change.

Aniline Green with Picric Acid.

For 100 lbs. of woollen goods. First colour with aniline blue, a9 describedunder Blue. Remove the cloth or yarn, and add 1 lb. of picric acid and 6 lbs.of alum to the dye. When the solution is complete, enter the woollens, boilfor twenty minutes, cool, and rinse. This green is not so fast nor so bright asthe former.

Olive-Green.

This colour is chiefly used for broadcloths. For 100 lbs. of wool. Dip firstin the blue vat. Then prepare a kettle by boiling 20 lbs. of fustic and 10 lbs.of logwood ; to the infusion add 10 lbs. of alum, 2 lbs. of tartar, 2 lbs. of sul-phate of copper, 10 lbs. of madder, 10 lbs. of turmeric. Boil for ten minutes,and then cool the dye to 180° F. Enter the blued wool, handling well for tenminutes, and boiling for one hour and a half. The shade may be varied by theaddition of more or less logwood or madder.

OLIVES.

Bichrome Olive.

For 100 lbs. of wool. Boil the wool for one hour in a kettle in which hasbeen dissolved 2 lbs. of bichromate of potash, 2 lbs. of tartar, and 5 lbs. ofalum. Remove, cool, and rinse. Prepare hy boiling for ten minutes a kettleof 20 lbs. of fustic, 5 lbs. of logwood, and 20 lbs. of madder. Cool to 180° F.,and enter the prepared wool. After well handling, boil slowly for half an hour,adding a solution of 2 lbs. of sulphate of copper. Cudbear, camwood, orpeawood, may be used instead of madder. Turmeric is too fugitive to beemployed with chrome colours.

A Cheap Olive.

For 100 lbs. of wool. Boil for one hour 30 lbs. of fustic, 6 lbs. of logwood,and then add ro lbs. of sumach, 5 lbs. of madder, 10 lbs. of red sanders, and