A one-page dictionary entry on carding machines from Knight's New Mechanical Dictionary. It describes Dobson & Barlow's traveling-flat and composite cards shown at the Centennial Exhibition, giving cylinder, doffer, taker-in and flat dimensions and the flat-grinding and stripping arrangements. It also covers Platt Bros.' wool oiling apparatus and triple burr roller arrangement, and includes an engraving of the Dobson & Barlow machine.