Plutonic rocks, [34].

Podocarya, [192].

Podosphenia, [92].

Podozamites Mantelli, [154].

Pœcilopleuron Bucklandi, [679].

Polierschiefer of Bilin, [96].

Polperro, Cornwall, [238].

Polycotyledons, [60].

Polyparium, [252].

Polype in flint, [250].