Fig. 4. Calamites, restored (Carruthers, Bot. Soc. Trans.)

Fig. 5. Psilophyton, a fossil of the Devonian epoch (Dawson).

Pl. I.

A. T. Hollick del. et lith. Mintern Bros. imp.
Fossil Ferns.

Pl. II.

A. T. Hollick del. et lith. Mintern Bros. imp.
Fossil Gymnospermous Fruits.