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.
Pallium. A symbol of office worn by bishops and archbishops of the Catholic church. It consists of a white woolen band, about two inches wide, and long enough to be worn around the shoulders and be crossed in front. It is always made at Rome from the wool of two lambs which the sisterhood of Santa Agnese offer every year on the occasion of the feast of their patronal saint. The pallium has crosses worked upon the white wool in black, and ornaments are attached to the ends. It is sent by the pope to every newly-appointed archbishop, the origin of its use dating back to the year 336 A. D.