Effie Archer Archer, The Library of Work and Play: Needlecraft
“ The twill or purl of buttonholing, as the little ridge on the edge is called, serves as a resistance for the material from fraying out.The buttonhole stitch is the most popular in embroidery. It is the foundation for many other stitches. Feather-stitching is really an open form of this stitch.As a usual thing it is necessary to pad before working buttonholing. It raises the work and makes it much more durable as an edge. The padding can be done in either running-stitch or chain-stitching. ”
