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