The Individual in the Animal Kingdom

Volvox globator Ehrenberg. An adult asexual colony, highly magnified. The hexagonal areas represent the gelatinous coats of the individual cells in surface view. The thin common envelope of the whole colony is seen round the circumference. In the hinder half of the colony are seen two of the large asexual reproductive cells, and various stages of their development into daughter-colonies. The two most advanced daughter-colonies have already secreted a common envelope of their own. (After A. Lang.)