Continuation of Posselt's series on reversible double-plain fabrics, covering checker-board effects in which every warp thread and pick serves alternately as face and back. It explains how to build the weaves on point paper by painting squares and adding a double plain and its mate. It describes two color/ply arrangements (Figs. 4 and 5, then Fig. 6 with a 24 by 24 repeat) and how the two plies are stitched together. The pages also carry short unrelated items on an embossed fabric patent, spinning mill management and waterproofing fabrics.