| Show snakes eyes never closed snakes may almost be said to hav have glass eyes inasmuch as their eye eyes never close they are without elds and each Is covered with a transparent scale much resembling glass when the reptile sheds its outer ekin skin the eye scales sales come off with the rest of the transparent envelope out of which the snake slips this glassy eye scale la Is so tough that it effectually protects the true eye from the twigs sharp grass and other obstructions the snake encounters in ln its travels yet it Is transparent enough to allow the most perfect vision thus if the snake has not a glass eye it may at any rate be said to wear glasses |