Motherhood and the Relationships of the Sexes
Parental conduct dependent on the sexual appetite, 102, 221 _et seq._,     368    Parental duties, Neglect of, weakens family, 107    Parental instinct, 34, 60, 61, 62, 70, 81, 91, 94 _et seq._, 105, 106,     130, 196, 214, 221, 368    Parental instinct, Diversity of, 62, 94, 99, 132, 134    Parental instinct not fixed in the mother, 79, 89, 99-102, 130, 184, 223    Parental instinct, Strength of the, dependent on expression, 94, 135, 196    Parental sacrifice, 63, 64-65, 66, 70-73, 103 _et seq._, 106, 221    Parental sacrifice more common with mother than father, 66, 171-173, 185    Parenthood, Difference between human and pre-human, 61, 130    Parenthood, Pre-human, 34, 37, 130, 135    Parents, Bad, 107, 182-183, 221 _et seq._    Paternal instinct.