This section is from the "A Complete Dictionary of Dry Goods" book, by George S. Cole. Also available from Amazon: A complete dictionary of dry goods and history of silk, cotton, linen, wool and other fibrous substances,: Including a full explanation of the modern processes ... together with various useful tables.
Toga (To'-Ga). The principal outer garment worn by the ancient Romans. It was a loose and flowing mantle or wrap of irregular form, without sleeves, usually made of wool, sometimes with a purple border at the bottom, and sometimes embroidered. Persons accused of any crime allowed their togas to become soiled as a sign of dejection; candidates for public offices whitened their togas artificially with chalk, presumably as an index to the spotless character of the wearer; while mourners wore a toga of black natural wool. [See Purple]