MEDIUM GREEN.

Prepare your feathers same as for bottle green. Prepare bath by

diluting about one ounce of turmeric in a gallon of boiling water, and

enter feathers, letting them remain in bath about two minutes; after

which take out and rinse in cold water twice. Have boiling a medium

strong bath of logwood, and pass feathers through for a few seconds,

first cooling off temperature of logwood bath a few degrees with cold

water; after which rinse off thoroughly, and prepare a bath of a

quarter of an ounce of bichromate of potash in a gallon of boiling

water, dissolve it thoroughly, and enter feathers; let them remain in

this bath about ten seconds, and take them out and rinse thoroughly in

cold water. Proceed to dilute one teaspoonful of turmeric and a half

teaspoonful of aniline green in a gallon of boiling water, and reduce

temperature a few degrees with cold water. Enter your feathers, and let

them remain in bath about three minutes; then take them out and cool

off a small portion of bath, and add a small handful of starch, and dry

in the usual way.

If found to be too dark, add a few drops of diluted oxalic acid to

starch bath, and pass your feathers through for a few seconds. If found

too light, rinse off the starch in cold water and return to logwood

bath for a few seconds, without increasing the temperature any, and

rinse off and give a weak bath of bichromate of potash, rinse off and

dry.

The Practical Ostrich Feather Dyer · 第 52 / 166 题