and putting on the bob-fly through the loop as you would put on the stretcher; or the tail line may be separated at the point where the bob-fly is to be attached, and the two ends of the gut, at the separation, may be placed one over the other, thus
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Then tie a common knot at each end, thus
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Then take the bob-fly, with about four inches of gut attached, and tie a common knot at the end of the gut. Then insert the bob-fly between the two ends of the gut and its knots. Then pull the two knots of the tail line tight together, and pull the knot of the bob-fly to meet those two knots, and the operation is finished, and the tail line and bob-fly assume the following appearance:—
