Part 29

Phylogeny, 63.

Pictography, 223-226; of Eskimos, of American Indians, 223, 224; of Asia, 224; of Egypt, 224, 225.

Pig, 42, 157.

Pithecanthropus, 174.

Plesiosaurus, 94.

Polynesia, 103, 104.

Pouched animals, kangaroo, opossums, 42.

Primates, name given by Linnaeus, 158; eutheria, 158, 159; order of, 160; anthropoids, 161; arrangement of organs, 201.

Processes, psychological, of higher animals, 208, 209.

Prosimii, 160.

Proteins, 22, 23, 24.

Protoplasm, 22-30; the physical basis of life, 143; 144; human, 156; chemicals that make up, 156.

Protozoa, 52, 53, 68, 70; relations of, 126.

Protozooen, 251.

Psychology, comparative, 198; principle of, 199; descriptive, genetic, 202; terms of, 203; human, 210, 211.

Pseudopodia, 52.

Puma, 101.

Pupa, 259.

Pygmy, 195, 196, 227.

Rabbits, 41, 101; domesticated, 137; introduced into Australia, 140.

Races, human, age of, 178; divisions of, 183-195; character of: status, variations of, 180, 181; color, a criterion of racial relationship, 181, 184; hair, character of, as means of classification, 181, 182; cranium, shape of, as means of identification, nose, jaws, 182.

Racoon, 38.

Rats, 41, 134.

Reason, 203; in mental life of communal insects, 207.

Religions, 288; Christian, Hebrew, Buddhistic, Tangaroan, 289, 290; Mohammedan, 290, 298; Dervish, Mahdist, 293; linguistic basis of, 293, 294; of savagery, 294, 300, 301; barbarism, civilization, 294; elements of, 295; forms of Christianity, 296; sects, Judaism, 297, 298; Brahmanism, Buddhism, 298, 299; Polytheism, Roman, 300.

Reptiles, variations about a central theme, 45; lizard, typical, 46; 157; embryos of, 171; 200.

Retention of better invention, 109.

Rhinoceros, 41.