At a hardware store you can buy tightly twisted cord of the size you wish to use in making your net. It is generally sold by weight. If you are planning to make a ping-pong or tennis net you will also need a heavy piece of cord for the head rope. A crab net would of course be netted on to an iron ring attached to a long wooden handle. A needle such as is shown in Fig. 31 may be made quite easily by any boy who can whittle. [Illustration: FIG. 32] When you have wound your cord on the needle, stretch the head rope taut between two convenient points, the backs of two chairs, for example, and begin at the left by tying one end of the cord to it. Make a loop the size you wish the mesh to be and fasten the cord to the head rope with a clove hitch, or two half hitches (see Fig. 32). When you have worked as far as you wish, get on the other side of the net and work back again. This row of meshes and all that follow after are made by fastening them to the upper row with a sheet bend (see Fig. 32). After the second row is finished come around to the other side again and knot the third row. When the net is wide enough knot it to a piece of rope the size of the head rope with a row of clove hitches. _The Weaver's Knot_ [Illustration: FIG. 33] In weaving bead chains on a loom, and in doing other things, you will often need to tie a new piece of thread or cord to a very short end. The weavers have a knot they use for this purpose, and as it is a simple one perhaps you would like to learn it. Hold the old end in a vertical position (that is, as if it were standing up), lay the new piece back of it, its short end turning toward the left and reaching an inch or more beyond the vertical thread. Bring the long end around in front of the vertical thread, up back of its own short end on the left and across in front of the vertical thread (see Fig. 33). All these threads are held in position by the fingers and thumbs of the left hand, while the right hand brings the thread around. The vertical or old end is now turned down through the loop in front of it and there held by the thumb, while with the fingers of both hands the long and short ends of the new thread are pulled up tight. _Turk's Head_ There is a beautiful knot called by sailors a "Turk's head." Girls will find that they can make the prettiest buttons imaginable with it, using silk cord of any colour, and both boys and girls will enjoy making napkin rings of rattan with a more open arrangement of the same knot. [Illustration: FIG. 34] [Illustration: FIG. 35]