on sensuous computation of number, [57], [58]
Primates. See [Apes] and [Monkeys]
Pritchard on Celtic languages, [275]
Progress in successive generations, [12-15]
Pronoun, first personal, [201], [232], [301], [387-389], [408], [409]
[Pronouns] and pronominal elements, [210], [275];
not differentiated in early forms of speech, [295] et seq.;
origin of, in gestures, [301-304], [387], [421], [422]
Proposition. See [Predication]
Psychogenesis. See [Child]