The mounted police of those days found little to do on Broadway, and even less on the quiet length and breadth of Riverdale Avenue, and many of them, from very weariness and ennui, made pets of their horses, sometimes teaching them simple tricks. Most of the men walked a good deal, and, with bridles hanging loosely over their arms, allowed the horses to browse the grass at the roadside. But one man had fallen into the habit of leaving his horse entirely free, to follow him like a dog. This animal was the big black, whose swollen leg Mr. Lawton had been interested in, in the spring. His name was Napoleon. He had been on the force for years, and was famous for his speed in short dashes. He had become well acquainted with the Lawtons, and would beg from the girls in the most barefaced manner whenever he met them; while he had established apron-nibbling relations with Lena, who talked much to the policeman of her "mash-man," who was his friend, while Napoleon meditatively sampled the gingham she wore. Sometimes, while the officer gossiped, the horse would be a third of a block and more away, climbing an embankment, or reaching into some hollow after an enticing bit of dandelion or clover clump; and though he answered to a whistle, as a dog would, Sybil had several times remarked that some day an interesting moment would arrive for that policeman, that some sudden call would come for his services, and before the sundered man and horse could be united time would be lost and trouble would accrue--for the man, at least. But October had arrived, and her prophecy was as yet unfulfilled. As Mr. Bulkley drove out of the old White house gateway the most unobservant person must have noticed that the big chestnut gelding was either in great discomfort or in a very bad temper. Dorothy was surprised, too, to see Mr. Bulkley trying to pull the animal, who wanted to go, down to a walk, and, finally, in a burst of temper, sawing the poor brute's mouth so cruelly that Dorothy, with a cry of pity, caught at Mr. Bulkley's wrist with her ungloved hand, saying: "Please, oh, please, don't do that, it hurts him so! See, there's a streak of blood on the foam of his mouth!" And, at that unconscious touch, William Henry Bulkley, with the red of his cheek spreading over brow and neck, turned avid eyes upon her, saying thickly that "that little hand of hers had power to guide him where it would," adding, with brutal coarseness, that he "would crush the horse's jaw, like a nutshell, to spare her annoyance!" a speech that was a trifle wide of the mark, since he, and not the horse, had hurt and frightened her. "Mr. Bulkley," said Dorothy, "won't you please let him go on a little faster? Mamma will find the time very long!" And her companion laughed aloud, as, with ill-considered frankness, he made answer: "Oh, I guess mamma's all right!" Then he traitorously added: "She's being treated vicariously. The drive _you_ take will cure _her_ headache!" laughing immoderately.