The creature had died--a “natural” death. It had starved, while a hundred acres of plenty lay round about. Picking up the skull, I found the jaws locked together as if they were a single solid bone. One of the two incisor teeth of the upper jaw was missing, and apparently had never developed. The opposite tooth on the lower jaw, thus unopposed and so unworn, had grown beyond its normal height up into the empty socket above, then on, turning outward and piercing the cheek-bone in front of the eye, whence, curving like a boar’s tusk, it had slowly closed the jaws and locked them, rigid, set, as fixed as jaws of stone. At first the animal had been able to gnaw; but as the tooth curved through the bones of the face and gradually tightened the jaws, the creature got less and less to eat, until, one day, creeping out of the burrow for food, the poor thing was unable to get back. We seldom come upon the like of this. It is commoner than we think; but, as I have said, it is usually hidden away and quickly over. How often do we see a wild thing sick--a bird or animal suffering from an accident, or dying, like this muskrat, because of some physical defect? The struggle between animals--the falling of the weak as prey to the strong--is ever before us; but this single-handed fight between the creature and Nature is a far rarer, silenter tragedy. Nature is too swift to allow us time for sympathy. At best there is only a fighting chance in the meadow. Only strength and craft may win; only those who have all of their teeth. The muskrat with a single missing tooth never enters the real race of life at all. He slinks from some abandoned burrow, and, if the owl and mink are not watching, he dies alone in the grass, and we rarely know. I shall never forget the impression made upon me by those quiet bones. It was like that made by my first visit to a great city hospital--out of the busy, cheerful street into a surgical ward, where the sick and injured lay in long white lines. We tramp the woods and meadows and never step from the sweet air and the pure sunlight of health into a hospital. But that is not because no sick, ill-formed, or injured are there. The proportion is smaller than among us humans, and for very good reasons, yet there is much real suffering, and to come upon it, as we will, now and then, must certainly quicken our understanding and deepen our sympathy with the life out of doors. No sensible person could for a moment believe the animals capable of suffering as a human being can suffer; nor that there is any such call for our sympathy from them as from our human neighbors. But an unselfish sharing of the life of the fields demands that we take part in all of it.