afterwards, conveyed to Dublin. The Hound broke loose in Dublin, and the same morning made his way back to his old kennel at Newbridge, thus completing the third side of a triangle by a road he had never travelled in his life.” Again, Mr. Romanes narrates the case of a Dog who, when taken by his master from Oban to Greenock, by sea, was grievously sea-sick. The next time the journey had to be made, the Dog, remembering his former trouble, jumped off the boat and disappeared. His master continued his voyage, and was greatly surprised, when he arrived at Greenock, to find the Dog waiting for him on the wharf! The distance from Oban to Greenock is fifty miles in a straight line, and this straight course the Dog is not likely to have taken, as his way would then have lain across mountains, a lake, and an arm of the sea. Thus it would seem that the Dog must have some sort of notion of direction, must possess, as it were, a special sense of the nature of a mariner’s compass, and that, so far from his sense of locality being due in any way to power of smell, it is perhaps the most striking example of a pure instinct which it is possible to conceive. We have not given many instances of instinct in the Dog, for it is a faculty of which no one denies the existence, but of reasoning power it is necessary to treat more fully, as many persons are disposed wholly to deny the presence of that faculty in all the lower animals, and to make it the exclusive prerogative of man. Every one who has kept a Dog must have seen it perform actions which, in a human being, would unhesitatingly be put down to reason; every one must have heard of cases in which a choice of two or more courses was presented to a Dog, and in which he has, after due reflection, chosen the best. We are indebted to Mr. Hugh Miller, F.G.S., for a good instance of reasoning power in a Dog belonging to his brother, Captain Miller. This Dog, “Tara” by name, a Greyhound with a dash of Pointer, was one day taken out with a carriage for a run of forty miles. Now, it is estimated that a Dog, by his uncontrollable habit of “meandering,” usually goes over about three times, the ground of the horse or man he accompanies, so that on this occasion Tara must have run considerably over a hundred miles, and was in consequence rather done up when she reached home. She usually slept in the dining-room, whence she was always ejected at 7 A.M. by the housemaid who cleaned the room. On this occasion, however, no amount of persuasion could induce Tara to occupy her accustomed sleeping-place; she positively insisted upon following her master upstairs to his bedroom, where she evidently expected she could remain undisturbed for a good long rest, and where she did actually remain till 2 P.M. on the following day.