Prepare your feathers by washing thoroughly in hot water, and rinse
thoroughly to remove any soap that may adhere to the feathers. Then
prepare a bath by diluting a handful of starch in a half gallon of hand
warm water, and rub feathers around between the hands. Remove feathers
and a add a few drops of diluted Victoria green and a couple of drops
of diluted picric acid. Enter feathers, letting them remain in bath
about two minutes, keeping them well under the surface to insure an
even color.
If wanted a shade more on the yellow, add a drop more of picric acid;
and if more on the blue, leave the picric acid out entirely. Take out
and dry in starch, being careful to beat out on a clean board in the
usual way.