affords pure air and accessibility to the homes
of employees. In England and Germany the
advance towards this ideal has taken form in
the ``garden cities'' of which the plant is the
nucleus and the support. In America there is
no lack of industrial towns planned and built
as carefully as the works to which they are
tributary.

Some have added various ``welfare'' features,
ranging from hot luncheons served at
cost, free baths, and medical attendance to
night schools for employees to teach them how
to live and work to better advantage. The
profit comes back in the increased efficiency
of the employees.

_Even though the health be perfect and the
attitude of attention be sustained the will is
unable to retain concentration by an effort for
more than a few seconds at a time_.

When the mind is concentrated upon an

object, this object must develop and prove
interesting, otherwise there will be required
every few seconds the same tug of the will.
This concentration by voluntary attention is
essential, but cannot be permanent. To secure
enduring concentration we may have to