Page 140 - Geoffrey Budworth, Jason Dalton "The Little Book of Incredibly Useful Knots"
P. 140
Bowstring loop
In earlier days archers would string their bows with natural sinew and gut by tying this knot.
You can still use it to tie slippery synthetic materials into a small loop to attach to a stake or
post. Care must be taken to finish it in the right way, as there are several ways to tie it
incorrectly.
Begin with a loop in the standing end, with the working end emerging on top of the loop (1). Pull
the working end through the loop from the bottom (2). Feed the working end beneath the adjacent
section of knot and it will emerge on the opposite side (3). Pull on the standing end to tighten the
knot (4). In slippery materials, the knot can be made tighter even when under a load, but will not
loosen.