From far down Darby Creek came the answering bark of the old fox. Only the sudden explosive quality of the sound made it resemble in any way the bark of a dog. A curious screeching quality of tone ran through it, and it sounded as if made by some animal who was trying to bark but had never really learned how. Then, with the disconcerting suddenness of a fox, Father Fox stood before his new family for the first time. From his narrow jaws swung a fringe of plump mice, with their tails ingeniously crossed so that they could all he carried by one grip of the narrow jaws. Dropping them, the old fox stared solemnly at his family grouped in the moonlight, and then growled deep and approvingly in his throat. Two of the cubs wore the usual clouded pale yellow of a young red fox. The third, however, showed, faintly outlined, a velvety black face, ears, muzzle, and legs, with a silky black streak down his back, crossed at the shoulders by a similar stripe shading into reddish and silver-gray, while his little black tail had the silver tip which is the hall-mark of the rare cross-fox, which is sometimes born into a red-fox family.
From that night the training of the little fox family began. Father Fox no longer brought his kill directly to the den. Instead, he hid it not too carefully some fifty yards away, and the cubs learned to know the scent of food—flesh or fowl—and to dig it out from under piles of leaves or brush, or even from under an inch or so of freshly dug earth. Then, with tiny growls, they would crouch and steal forward and pounce upon the defenseless kill, with
