A three-page Czech encyclopedia entry on fibers from Ottův slovník naučný. It classifies textile and papermaking fibers as plant, animal, mineral and artificial, and describes how to tell them apart by burning, chemical reagents and microscope appearance. Microscope drawings show flax, hemp, ramie, New Zealand flax, wood fibers, wool and hare hair, and the entry closes with the early history of artificial silk (Chardonnet, Pauly and others).