Cleaning the hair of the bow.
If dirty, unscrew the nut from the stick, and wash the hair with warm water and soap. Then rinse in cold water, and hang up the bow to dry. When again screwed up, powdered resin is rubbed into the hair with a little brush. Spots of grease are extracted by rubbing with salt in blotting paper, or by a hot iron with blotting paper wrapped around it.