Motherhood and the Relationships of the Sexes
157-159, 170, 173, 185,     191 _et seq._, 203    Paul, Jean, 306    Penang, Highlanders of Sumatra, 180    Penguins, 109-114, 181    Phalaropes, 100, 102, 224    Pleasure factor in love, 221, 222    Polygamy, 154, 193-195    Polygamy connected with desire for offspring, 87, 88, 148    Polygamous fathers, 101, 108-109, 124 _et seq._, 126, 127, 133    Polygamy, Legalised, 191, 195, 213    Polyandrous mothers, 101, 133, 223    Polyandry, 154-155    Position of the father under matriarchy, 151, 191    Position of the mother under patriarchy, 171-172, 192    Primitive human family, 141-159    Problem of education.