A short piece of string is broken from the larger piece, and to one end of this latter the pin is fastened by being thrust through a knot.
To the other end or the short cord is attached the nail.

Then the long string is tied to the short string a little distance above the nail.
With this contrivance all made ready Bob and Ted sneaked up under the front window of the widow's house.

It was the work of but a moment for Bob to stick the point of the pin in the wooden part of the window-frame so that the nail dangled against the glass.

Then, holding the free end of the long string, he and Ted withdrew to the shadow of some lilac bushes.
"All ready ?" asked Ted.
"Sure.

Here she goes!" Bob then gently jerked the string.