Every drop of alcohol does so much to reduce that action. We have heard this beautifully described by one of the foremost of living medical men. He began by stating, what no one can doubt, that a certain quantity of alcohol taken by the strongest man will kill that man as effectually as if he were shot through the head with a rifle bullet. Now a certain portion of alcohol takes a man's sight entirely away. Half that quantity will only render his vision "double"--that is, unfit him to see objects as they really are. Half that again will only perceptibly impair the power of the eyes; but the action of the smallest particle of the substance is the same in nature as that of the largest quantity. Hence that action is to reduce the very efficiency of the nerves of the eye, which it is of such immense importance to nurse to the uttermost. No mere dictum, however strongly expressed, can hold for a moment against this transparent reason. Hence, if a person must take alcoholic liquor, the cure of inflammation in his eyes, and of the thickening of the transparent portions of these organs, is simply out of the question unless the disease is comparatively slight, and his nervous constitution strong. The very same reason holds good of tobacco. So of opium. So of every other narcotic, whatever it may be called. Hundreds of men lose their eyesight by the use of tobacco alone. We have seen their eyeballs gradually becoming sightless when no change could be detected in their eyes--only the optic nerve gradually lost its sensibility till they were entirely blind. We are perfectly aware that there are those who will scout the idea of such an effect, and prescribe these very narcotics largely in such cases; it is because such drugs are used and ordered that we are compelled thus to reason about them. In all cases of failing eyesight they should be carefully avoided. So should all foods which are not easily converted into healthful blood. Eyes, Healthy.--Cheap, ill-printed literature is responsible for much eye trouble, and it is well worth while to pay, if possible, a little extra for books well printed, especially in the case of those who read much. When reading sit erect, with the back to the light, so that it falls over the shoulder. Too fine work, dim light, wrong diet, and want of exercise produce the dull and strained eye, which eventually becomes seriously diseased. Opening the eyes under cold water will help to strengthen them, and massaging the muscles of the eye by passing the finger and thumb round the socket (with scarcely any pressure on the ball itself) will be found of advantage.