"8. Authors should have black-ruled paper instead of blue, and should never strain the eyes by reading too fine types. "9. The bedroom blinds should be red or gray, and the head of the bed should be toward the window. "10. Those ladies who not only write but sew should not attempt the black seam by night. "11. When you come to an age that suggests the wearing of spectacles, let no false modesty prevent you from getting a pair. If you have only one eye, an eye-glass will do; otherwise it is folly. "12. Go to the wisest and best optician you know of and state your wants and your case plainly, and be assured you will be properly fitted. "13. Remember that bad spectacles are most injurious to the eyes, and that good and well-chosen ones are a decided luxury. "14. Get a pair for reading with, and if necessary a long-distance pair for use outdoors." Further rules are:-- Avoid all sudden changes between light and darkness. Never begin to read, write, or sew for several minutes after coming from darkness to a bright light. Never read by twilight or moonlight, or on dark, cloudy days. When reading, it is best to let the light fall from above obliquely over the left shoulder. Do not use the eye-sight by light so scant that it requires an effort to discriminate. The moment you are instinctively prompted to rub your eyes that moment stop using them. If the eyelids are glued together on waking up do not forcibly open them, but apply saliva with the finger. It is the speediest diluent in the world; then wash your eyes and face in warm water. In the selection of books or pamphlets see that the paper is of a slight orange tint; this shade is the most pleasant for the eye to look upon. The following is recommended as an efficient means of removing particles from the eye: Make a loop by doubling a horse hair; raise the lid of the eye in which is the foreign particle; slip the loop over it, and placing the lid in contact with the eyeball, withdraw the loop, and the particle will be drawn out with it. An old locomotive engineer gives the following as an infallible method to eradicate any foreign substance from the eye, viz., close the eyes, and rub gently from right to left with a circular motion the well eye.