An article by P. P. Townend explaining how wool is carded for worsted yarns, and how this differs from the preparing (gilling) process used for longer fibres. It covers the aims of carding, the removal of burrs and other vegetable matter, the structure and action of the worsted card (working, stripping and lifting), roller sizes, speeds and tooth densities, output rates, and fibre breakage. Illustrated with photographs of carding engines, a card diagram, a diagram of wire teeth and a table of roller specifications.