GILDING AND SILVERING.
Gilded and silvered ostrich feathers are but seldom in demand, and then only for grand evening dresses or stage effects, and for short seasons, which generally return far between. Their production is by no means a dyeing process, but rather an operation of surface ornamentation, still the dyer is sometimes requested to perform it. While goose feathers and other feathers of small value are wholly gilded or silvered, the gilding of ostrich feathers consists chiefly in a sprinkling with metallic dots, or sometimes in an edging, or is only applied to the tip of the feathers, which, from the nature of the operation, are treated singly. Such ornamented feathers, white as well as dyed, being only used for short periods, a permanent fixation of the gold or silver upon them is not required, but rather undesirable, as they will soon be redyed for other uses.
For gilding, respectively silvering, a sufficiently adhesive solution of possibly colorless gum arabic is prepared and distributed by hand, and by means of a fine hair-brush, in smaller or larger dots, as required, over the upper side of the feather or along the edges, and before the gum solution becomes dry, sprinkled over with finely divided gold-leaf or silver-leaf. The feather is then turned over, given a few light taps with the hand to remove the loose dust of metal, and vigorously shaken, partly to prevent the fibres from sticking together, partly to remove the remaining loosely adhering particles of metal. The operation must be performed as rapidly as possible to prevent the gum solution from drying before the metallic dust is shaken off. The smaller the gum-dots are made, the quicker must the work be done, but the less is the danger of the fibres being pasted together, and the more elegant the appearance of the feather. The dots or spangles are made of different shapes, in little circles or squares, and sometimes arranged so as to form angular designs, according to taste and skill of the operator.
Another very pretty, scarcely more permanent, but more frequently applied ornamentation of ostrich feathers, is the following.