connection of elements in, [159] f.
Personal difference, [237].
Personal equation, [237].
Personalisation, tendency toward, [205], [323].
Personality, dual and multiple, [314] f.
Physics, leaves man out of the world, [8];
method of, [21] f.;
early became experimental, [25];
suffers from bias of language, [323].
Pitch, of tones, [52];