Christopher's Three Knots in a Rope

One of the hit openers which Milbourne Christopher uses in his act, is this original effect given you here.

Effect

Performer shows a six-foot piece of soft clothesline.

Suddenly three knots appear in the rope about a foot and a half apart. Performer blows at the left hand knot and it disappears from rope.

He unties the center knot as evidence that the knots are real ones. Passing his right hand over the remaining knot, he removes it and tosses it out to the audience.