The gall of the red sea-scorpion,[198] used with stale oil or Attic honey, disperses incipient cataract; for which purpose, the application should be made three times, on alternate days. A similar method is also employed for removing indurations[199] of the membrane of the eyes. The surmullet, used as a diet, weakens the eyesight, it is said. The sea-hare is poisonous itself, but the ashes of it are useful as an application for preventing superfluous hairs on the eyelids from growing again, when they have been once pulled out by the roots. For this purpose, however, the smaller the fish is, the better. Small scallops, too, are salted and beaten up with cedar resin for a similar purpose, or else the frogs known as “diopetes”[200] and “calamitæ,” are used; the blood of them being applied with vine gum to the eyelids, after the hairs have been removed. Powdered shell[201] of sæpia, applied with woman’s milk, allays swellings and inflammations of the eyes; employed by itself it removes eruptions of the eyelids. When this remedy is used, it is the practice to turn up the eyelids, and to leave the medicament there a few moments only; after which, the part is anointed with oil of roses, and the inflammation modified by the application of a bread-poultice. Powdered bone of sæpia is used also for the treatment of nyctalopy, being applied to the eyes with vinegar. Reduced to ashes, this substance removes scales upon the eyes: applied with honey, it effaces marks upon those organs: and used with salt and cadmia,[202] one drachma of each, it disperses webs which impede the eyesight, as also albugo in the eyes of cattle. They say, too, that if the eyelids are rubbed with the small bone[203] taken from this fish, a perfect cure will be experienced. Sea-urchins, applied with vinegar, cause epinyctis to disappear. According to what the magicians say, they should be burnt with vipers’ skins and frogs, and the ashes sprinkled in the drink; a great improvement of the eyesight being guaranteed as the sure result. “Ichthyocolla”[204] is the name given to a fish with a glutinous skin; the glue made from which is also known by the same name, and is highly useful for the removal of epinyctis. Some persons, however, assert that it is from the belly of the fish, and not the skin—as in the case of bull glue—that the ichthyocolla is prepared. That of Pontus[205] is highly esteemed: it is white, free from veins or scales, and dissolves with the greatest rapidity. The proper way of using it, is to cut it into small pieces, and then to leave it to soak in water or vinegar a night and a day, after which it should be pounded with sea-shore pebbles, to make it melt the more easily. It is generally asserted that this substance is good for pains in the head and for tetanus.