Some would set the contents of the male resonating cavities in vibration; others would affect the less regular cavities in the thorax of the female.

We might compare the Cigale's cry to a sheep-bell.

That it is felt and not heard explains its loudness and its grating quality.

A Cigale with the resonating cavities destroyed would possibly be lost.

The experiment is worth trying .-- [TRANS.]] [Footnote 2: It is not easy to understand why the Mantis should paralyse the cricket with terror while the latter will immediately escape when threatened by other enemies.