One seldom comes upon the like of this. It is commoner than we think; but 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 two lives for life—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, too merciless to allow us time for sympathy. It was she who taught the old Roman to take away his weak and malformed offspring and expose it on the hills. There is, at best, scarcely a fighting chance in the meadow. Only strength and craft may win. The muskrat with the missing tooth never enters the race at all. He slinks from some abandoned burrow, and, if the owl and mink are not watching, 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, or 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,—and all of it is but little short of tragedy. Nature wears a brave face. Her smile is ever in the open, her laughter quick and contagious. This brave front is no mask. It is real. Sunlight, song, color, form, and fragrance are real. And so our love and joy in Nature is real. Real, also, should be our love and sorrow with Nature. For do I share fully in as much of her life as even the crow lives as long as I think of the creature only with admiration for his cunning or with wrath for his destruction of my melons and corn? A crow has his solemn moments. He frequently knows fear, pain, hunger, accident, and disease; he knows something very like affection and love. For all that, he is a mere crow. But a mere crow is no mean thing. Few of us, indeed, are ourselves, and as much besides as a mere crow. A real love, however, will give us part in all of his existence. We will forage and fight with him; we will parley and play; and when the keen north winds find him in the frozen pines, we will suffer, too.