To some it seemed an inexplicable anomaly that a man of his type should have selected, as the work to which he had dedicated his life, the profession of medicine, and still more strange that he had become a specialist in the diseases of children. Yet such was the case, and many a mother, whose heartstrings were plucked by the lean fingers of Despair, had cause to bless the almost uncanny surgical skill which his highly-trained brain exercised through the medium of his big, spatulate, gentle fingers. As "Mac" had, in the old days, smashed his way through the opposing line of blue-jerseyed giants on the football field, and as he now plowed through the laurel and rhododendron, so had he won his way to the forefront of the younger generation of his profession until, at the age of thirty-five, he had become recognized as one of the most able children's specialists in America. A "man's man," blunt of speech to the point of often offending at first the cultured women with whom his labors brought him into contact, he was worshipped in hundreds of homes as an angel of mercy in strange guise, and was the idol of hundreds of little folk to whom he had brought new health and happiness. The toilsome upward climb brought its reward at length, and Donald's eye caught sight of a clearing, and unmistakable signs of near-by civilization, if a scattering mountain settlement of primitive dwellers in that feudal country which lies half in West Virginia, half in Kentucky, may be so designated. No sooner had he stepped into the partially cleared land, and caught sight of a small, isolated cabin beyond, so toned by wind and weather that it seemed almost an integral part of its natural surroundings, than his own presence was detected, as the sharp and surly barking of an unseen dog evidenced. Mike made answer to the challenge, and instantly other, more distant, canine voices joined in the growing clamor. As man and dog advanced across the clearing, not one, but half a dozen gaunt curs, summoned to the spot by a warning which meant the approach of a stranger, much as their clannish masters might have been in other years, mysteriously appeared from all sides and rushed forward, their lips drawn back from threatening teeth, their bristling throats rumbling ominously. Donald sharply commanded the likewise bristling Mike to keep to heel, threw his rifle to hip and backed hastily toward the cabin. He had no wish to employ his weapon, and as retreat was the other alternative, for his companion's sake, if not his own, indeed, discretion seemed to be, by all odds, valor's better part. A noisy and exciting moment brought him to the cabin's door, still face to the enemy. Fumbling behind him with his left hand, Donald found and lifted the latch. The door swung suddenly open under his weight, Mike scurried between his legs, and the combination resulted in his downfall, precipitate and sprawling.