Page:Popular Science Monthly Volume 6.djvu/545
for the very small pupil. There is no external ear. The tongue is extensible to the length of half the total length of the animal, that is, from five to seven inches. The lungs are large, and connect with air-cells underlying the skin. The neck is so short as to prevent the head being turned from side to side. Though the chameleon is arboreal in
its habits, it is very slow in its movements. It is unprovided with any weapons of defense against its enemies. The female lays about thirty eggs, which are deposited in a hollow in the ground, and covered with loose earth.
The immobility of the chameleon distinguishes it markedly from the rest of the lizard tribe, which are generally active and quick in