I have on page 77 referred to Stricker's views on the primary revival of
words in the sense of movement of the lips and tongue. Mach ("Analysis of
the Sensations") says: "The supposition that the processes in the larynx
during singing have had something to do with the formation of the tonal
series I noticed in one of my earlier publications, but did not find it
tenable. Singing is connected in too extrinsic and accidental a manner with
hearing to bear out such an hypothesis. I can hear and imagine tones far
beyond the range of my own voice. In listening to an orchestral performance
with all the parts, or in having an hallucination of such a performance, it
is impossible for me to think that my understanding of this broad and
complicated sound-fabric has been effected by my _one_ larynx, which is,
moreover, no very practised singer. I consider the sensations which in
listening to singing are doubtless occasionally noticed in the larynx a
matter of subsidiary importance, like the pictures of the keys touched
which when I was more in practice sprang up immediately into my imagination
on hearing a performance on the piano or organ. When I imagine music, I
always distinctly hear the notes. Music can no more come into being merely
through the motor sensations accompanying musical performances, than a deaf
man can hear by watching the movements of players. I cannot therefore agree
with Stricker on this point" (comp. Stricker, "Du langage et de la
musique," Paris, 1885).

Of the motor type myself and having a fairly good untrained ear for music,
I find that to memorise a melody, whether played by an instrument or by an
orchestra, I must either try to sing or hum that melody in order to fix it
in my memory. Every time I do this, association processes are being set up
in the brain between the auditory centres and the centres of phonation; and
when I try to revive in my silent thoughts the melody again, I do so best
by humming aloud a few bars of the melody to start the revival and then
continuing the revival by maintaining the resonator in the position of