291.--To Purl, Pearl, or Seam.
Seaming or purling a stitch is done by taking up the stitch in front instead of at the back, throwing the thread over and knitting the stitch as in plain knitting; but before beginning to purl, the thread must be brought in front of the needle, and if a plain stitch follows, the thread is passed back after the purl stitch is made (see No. 291).
292.--To Increase. [293] Increasing or making a stitch is done by throwing the thread once round the needle and in the next row knitting it as an ordinary stitch.
293.--To Decrease.
This is done in two ways: firstly, taking up two stitches and knitting them together as one; secondly, by taking up a stitch without knitting it, called slipping, then by knitting the following stitch in the usual way, and then slipping the 1st (unknitted) over the 2nd (knitted) (see No. 293). When it is necessary to decrease two stitches at once, proceed thus:--Slip one, knit two stitches together, then slip the unknitted stitch over the two knitted together.
294.--Round Knitting.