A 15-page instruction paper on lubricating wool with oil before carding and spinning, from the International Textbook Co. (a correspondence-school text, section 33). It covers why wool is oiled, the oils used (olive, lard, oleine, red and mineral oils), emulsion recipes with ammonia or borax, and tests for acid in oil. It also compares hand oiling with automatic oilers (Spencer, Sargent, Goddard), with line drawings of the machines and notes on adjusting them.