elements lends assurance that
ultimately all possibilities will be utilized.

AS MANY SENSES AS POSSIBLE APPEALED TO.--Scientific Management
has made great progress in appealing to as many senses as possible
in its teaching. The importance of the relation between the senses
is brought out by Prof. Stratton.[16]

In teaching, Scientific Management has, in its teachers, animate
and inanimate, great possibilities of appealing to many senses
simultaneously. The instruction card may be

1. read to oneself silently--eyes appealed to
2. read to oneself aloud--eyes and ears appealed to, also
muscles used trained to repeat
3. read aloud to one--ears
4. read aloud to one and also read silently by one,--
eyes and ears
5. read aloud, and at the same time copied--eyes, ears,
muscles of mouth, muscles of hand
6. read to one, while process described is demonstrated
7. read to one while process is performed by oneself

There are only a few of the possible combinations, any of which
are used, as best suits the worker and the work.[17]

UNTRAINED WORKER REQUIRES APPEAL TO MOST SENSES.--The value of
appeal to many senses is best realized in teaching an inexperienced
worker. His senses help to remind him what to do, and to "check up"
his results.

AT TIMES APPEAL TO BUT ONE SENSE PREFERABLE.--In the case of
work that must be watched constantly, and that involves continuous
processes, it may prove best to have directions read to the worker.
So also, the Gang Instruction Card may often be read to advantage to
the gang, thus allowing the next member of a group of members to
rest, or to observe, while directions are taken in through the ears
only. In this way time is allowed to overcome fatigue, yet the work
is not halted.

AT TIMES ONE SENSE IS BEST NOT UTILIZED.--At times teaching may
well omit one sense in its appeal, because that sense will tend to
confuse the learning, and will, when the method is learned, be
otherwise utilized than it could be during the learning process. In
teaching the "touch system" of typewriting,[18] the position of the
keys is quickly remembered by having the key named aloud and at the
same time struck with the assigned finger, the eyes being
blindfolded. Thus hearing is utilized, also mouth muscles and finger
muscles, but _not_ sight.

IMPORTANCE OF FATIGUE RECOGNIZED.--A large part of the success
of sense appeal and sense t