Excerpt of Chapter IV from Edward F. Worst's Weaving with Foot-Power Looms (Dover reprint), on analyzing woven patterns for four-heddle (four-harness) weaving. It explains how to derive a draft from a woven fabric by numbering blocks of color and assigning heddle combinations under six principles, with two worked analyses (Figs. 193-195). It then explains two methods of blocking out a pattern from a draft on squared paper, using the Solomon's Delight draft (Figs. 196-198), including the exact method and the case where treadling differs from threading.