- Poulton, E. B., 670
- Poynting, J. H., 235
- Precocious segregation, 348
- Preformation, 54, 159
- Prenant, A., 163, 104, 189, 286, 289
- Prûˋvost, Pierre, 18
- Pringsheim, N., 377
- Probabilities, theory of, 61
- Productus, 567
- Protective colouration, 671
- Protococcus, 59, 300, 410
- Protoconch, 531
- Protohippus, 767
- Protoplasm, structure of, 172
- Przibram, Hans, 16, 82, 107, 149, 204, 211, 418, 595; Karl, 46
- Psammobia, 564
- Pseuopriacauthus, 749
- Pteranodon, 756
- Pteris, antheridia of, 409
- Pteropods of, 258, 570
- Pulvinulina, 514, 595, 600, 602
- Pupa, 530, 549, 556
- Pû¥tter, A., 110, 211, 492
- Pyrosoma, egg of, 377
- Pythagoras, 2, 509, 651, 720, 779
Table of Contents
INDEX.
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