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 Rh Maister Salmon, who published his "Compleat English Physician," in 1693, describes "Catus, the Cat," with careful minuteness, and with an admiration founded apparently on the strange cures wrought by a judicious use of its brains. "As to its Eyes," he continues gravely, "Authors say that they shine in the Night; and see better at the full, and more dimly at the change of the Moon. Also that the Cat doth vary his Eyes with the Sun; the Pupil being round at Sunrise, long towards Noon, and not to be seen at all at Night, but the whole Eye shining in the darkness. These appearances of the Cat's Eyes, I am sure are true; but whether they answer to the times of the Day, I have never observed. It is a crafty, subtle, watchful Creature, very loving and familiar with Mankind; but the mortal Enemy of the Rat, Mouse, and every sort of Bird, which it seizes on as its Prey. Its flesh is not generally eaten, yet in some Countries is esteemed an excellent dish."

The cat's eyes seem to have been used as a sort of rude clock for centuries in the East, where people have few household utensils, and plenty of leisure for observation. Père Huc tells us that, when travelling in the interior of China, he asked a peasant boy, who was leading a buffalo to graze, if it were yet noon. The child glanced first at the sky, where the sun was hidden by driving clouds; and,