4075. Œdipus solved the enigma—on which the monster dashed his head against a rock, and perished.
4076. Answer—Man; in the morning, or days of infancy, he crawls, or walks on all-fours; at noon, or in the days of youth and middle age, he uses two feet only; in the evening, or in his old age, he requires the support of a staff, so that he may be said to walk upon three feet.
4077. Puzzles vary very much. One of the simplest that we know is this:—Take away half of thirteen, and let eight remain.
4078. Write XIII on a slate, or on a piece of paper—rub out the lower half of the figures, and VIII will remain.
4079. What are termed "practical puzzles" are cut out of wood, cardboard, ivory, &c., and may be purchased at the toyshops.