III.—An acetic solution. Dyes, Bengal pink G B, phloxine G O, rosolan O B O F, rhodamine O 4 G, eosine A G, erythrosine.
By appropriate mixtures of the dyes of any one class, plumes can be dyed every possible color. After dyeing they are rinsed, and dried in a rotating apparatus. The final process is that of curling, which is done by turning them round and round over a gentle heat. For white feathers a little sulphur may be burned in the fire; for black or colored ones a little sugar.
IV.—The spray method. The solution of the dye to be used is put into an atomizer, and the spray directed to that part of the feather which it is desired to color. By using different colors the most marvelous effects and most delicate transitions from one color to another are obtained. Any kind of an atomizer can be used, the rubber bulb, pump, or bellows; the result is the same.
FELT WATERPROOFING: See Waterproofing.
FERMENTATION PROCESS, FATTY ACID: See Fats.
FERMENTATION, PREVENTION OF: See Anti-Ferments and Wines and Liquors.
FERROUS OXALATE DEVELOPER: See Photography.
FERTILIZERS
(See also Phosphate, Artificial.)