entatively, and follow it up by a
determined purpose to actually feel it, then we have obtained
something by the royal process that would have otherwise required
much time and perhaps some unpleasant experiences.

This knowledge is essential to success in designing machinery.
True, many have been successful with a very different attitude,
but engineers of the future must see to it that as many of the
phases are as favorable as can be made so.

Regarding the absorption of the knowledge of working mechanism in
the works this is greatly facilitated by a wholesome relationship
with other workers, and it is greatly handicapped without it.
Therefore, it is one of the cardinal points for the machine
designer to get thoroughly acquainted with others in the work so
as to know their likes and dislikes, as well as the mechanical
needs.

The favorable features in machine designs are: directness of
mechanism for the purpose; its simplicity and its efficiency; its
adaptability to the habit of thought and action of makers and
users.

The obstacles to its success are any of the features it may have
that cannot be readily comprehended by those who are to build,
sell, buy, and use these devices. It is of little value for real
success for a machine to be one that is readily understood by a
draftsman or manager, or that it is one that may be made to
perform wonders in the hands of a skilled expert.

The real economic success depends on the number of machines that
will be used. The number of machines that will be used depends on
the readiness with which the real workers take hold and manipulate
the machine.

To get a true conception of the value of a machine, it is
necessary to look at the showing of a business engaged in its
manufacture. In estimating the value of a machine-building
business for this purpose it is customary to speak of its "good
will."

Easiest Way to Improve.

Inventions of complete novelty and of great economic value have
attained success going in opposition to this principle of
conformity to the habit of the world. But the easiest way is to
direct improvements and inventions along lines that are the most
readily assimilated by the minds of the beings to be considered,
and this may be said to be one of the master-keys to economic
success.

The work of building the first model of a new machine may be under
the direct supervision of the inventor, and if only one machine is
to be made, the inventor can f