-the crash of ball
against ten-pins may suggest it. Or image (the word is imperfect, for it
seems to suggest only the eye) the sound of tearing ropes when some
precious weight hangs in danger. Or recall the bay of a hound almost
upon you in pursuit--choose your own sound, and see how pleasantly or
terribly real it becomes when imaged in your brain.

(c) _The motor image_ is a close competitor with the auditory for second
place. Have you ever awakened in the night, every muscle taut and
striving, to feel your self straining against the opposing football
line that held like a stone-wall--or as firmly as the headboard of your
bed? Or voluntarily recall the movement of the boat when you cried
inwardly, "It's all up with me!" The perilous lurch of a train, the
sudden sinking of an elevator, or the unexpected toppling of a
rocking-chair may serve as further experiments.

(d) _The gustatory image_ is common enough, as the idea of eating lemons
will testify. Sometimes the pleasurable recollection of a delightful
dinner will cause the mouth to water years afterward, or the "image" of
particularly atrocious medicine will wrinkle the nose long after it made
one day in boyhood wretched.

(e) _The olfactory image_ is even more delicate. Some there are who are
affected to illness by the memory of certain odors, while others
experience the most delectable sensations by the rise of pleasing
olfactory images.

(f) _The tactile image_, to name no others, is well nigh as potent. Do
you shudder at the thought of velvet rubbed by short-nailed finger tips?
Or were you ever "burned" by touching an ice-cold stove? Or, happier
memory, can you still feel the touch of a well-loved absent hand?

Be it remembered that few of these images are present in our minds
except in combination--the sight and sound of the crashing avalanche are
one; so are the flash and report of the huntman's gun that came so near
"doing for us."

Thus, imaging--especially conscious reproductive imagination--will
become a valuable part of our mental processes in proportion as we
direct and control it.

_2. Productive Imagination_

All of the foregoing examples, and doubtless also many of the
experiments you yourself may originate, are merely reproductive.
Pleasurable or horrific as these may be, they are far less important
than the images evoked by the productive imagination--though that does
not infer a separate faculty.

Recall, again for experiment, some sce