PLATE II.

The stems of the same plants, also from Smith's ' 's 'English Botany.' The numbers refer to the same forms as in Plate I.

1

PLATE III.

Represents the geometrical flint shields of certain of the lower forms of animals (Radiolarians) and plants (Diatomaceœ).

RADIOLARIA.

Fig. 1. Heliosphæra actinota (after Häckel).

Fig. 4. Triceratium favus (after Queket).
5. Arachnoidiscus Ehrenbergii (idem).