by means of lacteal glands, or teats, and are so constituted as to have a warm or red blood. In it the whale is placed,--an order which, from external habits, has usually been classed with the fishes; but, although this animal exclusively inhabits the water, and is supplied with fins, it nevertheless exhibits a striking alliance to quadrupeds. It has warm blood, and produces its young alive; it nourishes them with milk, and, for that purpose, is furnished with teats. It is also supplied with lungs, and two auricles and two ventricles to the heart; all of which bring it still closer into an alliance with the quadrupedal species of the animal kingdom.