Part 33

Osmunda, 89.

Osmundites, 91.

Otopteryx, 97.

Otozamites, 79.

Oxford Clay, Coniferæ of, 86.

Palæophytology, 1.

Palæopitys, 32.

Palæopteris, 32, 34, 41.

Palæozamia, 79.

Palæozoic or Primary period, 26.

Palæozoology, 1.

Palissya, 80, 86.

Paliurus, 97.

Palm, 96.

Palmacites, 87, 90, 96.

Pandanaceæ, 84.

Pecopteris, 42, 96.

Pecopterideæ, 41.

Pepperworts, 31.

Permian flora, 71.

Permian period, fruits of, 72.

Petrifaction, 9.

Petrified forests, 11.

Pence, 64, 80, 82, 86, 89.

Phanerogamia, number of Miocene species of, 97.

Phaseolites, 92.

Phœnicites, 92.

Phyllotaxis, 54, 55.