A short 1920 article by E. A. Posselt on producing circular spot effects on fabric structures, particularly over satin grounds. It explains that the spot is built from a sequence of 5-harness satin and 2/3 and 3/2 effects, and can be distributed over plain, 4-harness broken twill or 5-leaf satin settings, for Jacquard work. The page includes a grid diagram of the circular spot design.