There are certain conditions of the eye which may warn any one that it is desirable that the condition of the vision ought to be investigated by the ophthalmoscope. Rapidly increasing short-sightedness is one of the most marked, and when this becomes associated with weakness of sight and loss of acuteness in the perception of small objects, the warning is very urgent. A diminution in the field of vision is another important indication of internal changes in the eye, of which only the ophthalmoscope can detect the true nature. It would be difficult, perhaps, to say whether more mischief is done and more suffering is caused by the total neglect of such symptoms or by their ignorant palliation by the aid of common spectacles, chosen empirically, because they facilitate vision for the time. The great use of the ophthalmoscope, then, is this: that it arms us with an instrument of precision, by which we can determine the precise local condition of the parts of the eye in which the function of sight is resident and through which it is regulated. If it cannot do all that we might ask, it is because the sense of sight is in truth a cerebral function, of which the eye is only an instrument; and in dealing with cerebral affections of the sight, it can indeed give us information which without it we should lack, but it leaves still to be desired more intimate acquaintance with first causes, which at present we can only discuss inferentially. To the amateur in science, and to the lover of nature, it discloses an exquisite spectacle, unknown till now, that carries {127} observation into the inner chambers of the living eye, and displays its wonders and its beauties. The observation is perfectly painless, and may easily be effected: rabbits, for example, submit to it with great calmness and composure, and at the College of Physicians' _soirée_ last year, a little pet white rabbit of mine sat up calmly in a box which I had made for the purpose, and was examined, by the aid of a modification which I devised of Liebreich's demonstrating ophthalmoscope, by many score of observers. Mine has the advantage of being adapted for use even amid a blaze of light, and it cannot easily be disarranged; two qualities valuable in an instrument for demonstration. ---------- From The Lamp. THE PILGRIMAGE TO KEVLAAR. FROM THE GERMAN. The mother stood at the window. The son he lay in bed; "Here's a procession, Wilhelm; Wilt not look out?" she said. "I am so ill, my mother, In the world I have no part; I think upon dead Gretchen, And a death-pang rends my heart." "Rise up; we will to Kevlaar; Will staff and rosary take; God's Mother there will cure thee,-- Thy sick heart whole will make." The Church's banner fluttered, The Church's hymns arose; And unto fair Cöln city The long procession goes.