Part No. 4 (1900) of Charles G. Petzold's serial textbook on the construction of weaves, intended for textile schools, designers, loom fixers and webdrawers. It covers serpentine twills, cross twills in four directions, braided or interlaced cross twills, cross twills starting at different heights, cross twills in sateen position, and discontinued or broken twills. The text gives rules for calculating harness numbers, twill parts and repeat sizes, and is illustrated with numbered drawdowns (figures 260-308). It includes a woven portrait of Abraham Lincoln and advertisements for Lawrence, Mass. mill suppliers.