A snake in a bedroom of a modern city dwelling of the better sort is, happily, not so common a phenomenon as to make explanation altogether needless. Harker Brayton, a bachelor of thirty-five, a scholar, idler, and something of an athlete, rich, popular, and of sound health, had returned to San Francisco from all manner of remote and unfamiliar countries. His tastes, always a trifle luxurious, had taken on an added exuberance from long privation; and the resources of even the Castle Hotel being inadequate for their perfect gratification, he had gladly accepted the hospitality of his friend, Dr. Druring, the distinguished scientist. Dr. Druring’s house, a large, old-fashioned one in what was now an obscure quarter of the city, had an outer and visible aspect of reserve. It plainly would not associate with the contiguous elements of its altered environment, and appeared to have developed some of the eccentricities which come of isolation. One of these was a “wing,” conspicuously irrelevant in point of architecture, and no less rebellious in the matter of purpose; for it was a combination of laboratory, menagerie, and museum. It was here that the doctor indulged the scientific side of his nature in the study of such forms of animal life as engaged his interest and comforted his taste—which, it must be confessed, ran rather to the lower forms. For one of the higher types nimbly and sweetly to recommend itself unto his gentle senses, it had at least to retain certain rudimentary characteristics allying it to such “dragons of the prime” as toads and snakes. His scientific sympathies were distinctly reptilian; he loved nature’s vulgarians and described himself as the Zola of zoology. His wife and daughters, not having the advantage to share his enlightened curiosity regarding the works and ways of our ill-starred fellow-creatures, were, with needless austerity, excluded from what he called the Snakery, and doomed to companionship with their own kind; though, to soften the rigors of their lot, he had permitted them, out of his great wealth, to outdo the reptiles in the gorgeousness of their surroundings and to shine with a superior splendor.