Cotton or thread, wool or silk, with a crochet-needle, are the materials required for working crochet. The needle, whether it be steel or bone, must be smoothly polished. The long wooden and bone crochet-needles are used for wool; for cotton and silk work short steel needles screwed into a bone handle are best. The beauty of the crochet-work depends upon the regularity of the stitches, as is the case with every other style of needlework. The stitches must be elastic, but if too loose they look as bad as if too tight. The size of the needle and that of the cotton or wool must correspond; work only with the point of the needle, and never move the stitch up and down the needle. The cotton with which you work must be of the very best quality; for borders, insertions, rosettes, imitation of guipure, use Evans's crochet cotton; for couvrettes, counterpanes, covers, &c., use knitting-cotton. All crochet-work patterns are begun on a foundation chain; there are three kinds of foundation chains--the plain foundation, the double foundation, and the purl foundation chain.