A continuation of E. A. Posselt's article on how the direction of yarn twist (right hand or left hand) in warp and filling changes the look of woven fabric. It explains light and shade effects in floating weaves using enlarged diagrams of 6-harness twill and broken twill structures (Figs. 3-18), comparing like, opposite and alternating twist combinations. It also gives practical advice on keeping different twist yarns distinct in the mill and at the loom. The first page opens with the end of an article on Jacquard figure picks and point paper designs (Figs. 172-174) for multi-shuttle weaving.