Several embroidery stitches make up today's combination stitch - Guilloche Stitch.
Guilloche is an architectural term for a decorative border with interwoven wavy lines. The embroidery stitch consists of Stem Stitch, Threaded Satin Stitch and French Knots.
It is featured in several embroidery dictionaries, e.g. Mary Thomas's Dictionary of Embroidery Stitches and Reader's Digest Complete Book of Embroidery. Also, there is a beautiful tutorial at Needle 'n Thread.
Stitch it like this:
Make a line of Stem Stitches.


























