From the monad nature passes to the Volvox, Proteus (Amoeba), and Vibrio.

From them are derived the _Polypes rotiferes_ and other "Radiaires," and then the Vers, Arachnides, and Crustacea.

On page 77 a tabular view is presented, as follows: 1.

_Les Mollusques._ 2.

_Les Cirrhipedes._ 3.