As to the size of the animal Urus, it is evident, by measurement of certain remains, that it must have well deserved Cæsar's comparison with the elephant. A skull that is described by Cuvier gave the following measurements. Width of skull between the bases of the horn-cores (_i.e._ the bony projections on which the hollow horns are set), rather more than twelve inches and an half. Circumference of the cores at the base, twelve inches and nine-tenths. Length of the cores, twenty-seven inches and nine-tenths; and distances between their tips, thirty-two inches and a half. According to the proportions of the domesticated ox, these measurements indicated that the animal was twelve feet in length, and six feet and a half in height. Now, if the reader will sketch out on a wall an ox of these dimensions, he will appreciate the enormous dimensions of the ancient Urus, far better than can be done by merely reading figures in a book. But this animal, gigantic as it was, is not the largest specimen that has been discovered. A portion of an Urus skull was discovered in the Avon, at Melksham, near Bath, the horn-cores of which, as described by Mr. H. Woods, were seventeen inches and a half in circumference, thirty-six inches and a half in length, and the distance from tip to tip was thirty-nine inches. Taking the same proportions as those of the ordinary ox, the author shows that the skull in question belonged to an animal very much larger than that which was described by Cuvier. In another specimen the distance between the tips of the horn-cores was forty-two inches, but their length only thirty-six. Of course, the size of the horn-cores gives little indication of the dimensions of the horns themselves, and the principal point to be noticed is the shape of the core, which in some specimens, though not in all, instead of presenting the regular double curvature with which we are so familiar in our domestic oxen, first curves outwards, then bends backwards or a little downwards and forwards. This peculiarity in the shape of the horns is specially noted by Cæsar, and we may therefore receive with more security his account of their enormous size. A curious rabbinical legend of the Reêm is given in Lewysohn's "Zoologie des Talmuds." When the ark was complete, and all the beasts were commanded to enter, the Reêm was unable to do so, because it was too large to pass through the door. Noah and his sons therefore were obliged to tie the animal by a rope to the ark, and to tow it behind; and, in order to prevent it from being strangled, they tied the rope, not round its neck, but to its horn.