modation. The patient was a young man, 23 years old, who consulted the doctor April, 1896, because his eyes ached a good deal in continued near work. He was wearing concave sphsrocylinders prescribed three years previously. With these glasses the vision of the right eye was 20-100, of the left 20-40. Each eye showed a hazy condition of the lens, which, after the pupils were well dilated, presented the characteristic picture of lamellar cataract. In both eyes the opaque portion showed a circular

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... outline from which, however, numerous very short but distinct dark lines were projected in such regular intervals that the whole looked very much like a fine cog-wheel of a watch. The diameter of the opaque portion was the same in both eyes, but the right was a little duller than the left. In the right eye the best vision obtainable was 20-70 with minus