For dark furs, warm a quantity of new bran in a pan, taking care that it does not burn, to prevent which it must be briskly stirred. When well warmed, rub it thoroughly into the fur with the hand. .Repeat this two or three times; then shake the fur, and give it another sharp brushing, until free from dust. For white furs, lay them on a table, and rub well with bran made moist with warm water; rub until quite dry, and afterward with dry bran. The wet bran should be put on with flannel; then dry with book muslin. Light furs, in addition to the above, should be well rubbed with magnesia, or a piece of book muslin, after the bran process, against the way of the fur.
Chip or Straw Hats or Bonnets may be dyed black by boiling them three or four hours in a strong liquor of logwood, adding a little copperas occasionally. Let the bonnets remain in the liquor all night; then take out to dry in the air; if the black is not satisfactory, dye again after drying. Rub inside and out with a sponge moistened in fine oil; then block. Red Dye. - Boil ground Brazil-wood in a lye of potash, and boil your straw hats, etc., in it. Blue Dye. - Take a sufficient quantity of potash lye, one pound of litmus, or lacmus, ground; make a decoction, and then put in the straw, and boil it.
Method of Bleaching Straw - Dip the straw in a solution of oxygenated muriatic acid saturated with potash. (Oxygenated muriate of lime is much cheaper.) The straw is thus rendered very white, and its flexibility is increased.