[Fig. 187½], W. Running knot with two ends.
[Fig. 187½], X. Running knot with a check knot that can only be opened with a marline-spike.
[Fig. 187½], Y. A two-ended running knot with a check to the running loops. This knot can be untied by drawing both ends of the cord.
[Fig. 187½], Z. Running knot with two ends, fixed by a double Flemish knot. When you wish to encircle a timber with this tie, pass the ends on which the check knot is to be through the cords before they are drawn tight. This will require considerable practice.
[Fig. 187½], a shows an ordinary twist knot.
[Fig. 187½], a1 shows the form of loop for builder's knot.
[Fig. 187½], b. Double twist knot.
[Fig. 187½], c. Builder's knot finished.
[Fig. 187½], d represents a double builder's knot.