Let us proceed at once to test our conclusion by introspection. If we
are sitting at our study table puzzling over a difficult problem in
geometry, _reasoning_ forms the wave in the stream of consciousness--the
center of the field. It is the chief thing in our thinking. The fringe
of our consciousness is made up of various sensations of the light from
the lamp, the contact of our clothing, the sounds going on in the next
room, some bit of memory seeking recognition, a 'tramp' thought which
comes along, and a dozen other experiences not strong enough to occupy
the center of the field.
