Prussia, [clxxviii], [clxxxiv].

Psychiatry, [33].

Psychology, [xxii], [xxiv], [lii] seqq., [lxiii], [lxxxvi], [xcv], [cxvii], [4], [58], [63].

Psycho-physics, [clvi], [23].

Punishment, [cxciii], [cciii], [111].

Purpose, [97], [114].

Races, [16].

Rationalism, [clxv], [183].

Reason, [cxv], [cxliii], [clxxii], [58].

Recollection, [70].