"It isn't hair from the coat of a horse that we want," cried Chippy, as he prepared to fly after Mrs. Chippy. "It is long hair form the tail or mane of a horse that we must have. It makes the very nicest kind of lining for a nest."

Chippy and Mrs. Chippy were gone a long time, but when they did return each was carrying a long black hair. They had found what they wanted, and Mrs. Chippy was in high spirits because, as she took pains to explain to Peter, that little nest would not soon be ready for the four beautiful little blue eggs with black spots on one end she meant to lay in it.

"I just love Chippy and Mrs. Chippy," said Peter, as they watched their two little feathered friends putting the finishing touches to the little nest far out on a branch of one of the apple-trees.

"Everybody does," replied Johnny. "Everybody loves them as much as they hate Bully and his wife. Did you know that they are sometimes called Tree Sparrows? I suppose it is because they so often build their nests in trees?"