when we can say definitely what the individual or
family inheritance will be in a given instance--not what it will be
with such and such a degree of probability, although that probability
be high. We may not be such a long way off from this ideal, which is
an essential for the inauguration of eugenic practice upon a large
scale. For the Eugenist this is the richest field for investigation
and one which is certain to yield large results.

The Eugenist's demand for more facts will doubtless become an
important factor in the progress of biological science. The practical
application of the knowledge of heredity in the production of
domesticated or cultivated varieties of animals and plants is becoming
annually more extensive; and with the recognition of the possibility
of the application of this knowledge to the control of the evolution
of man himself, will come a rapid increase in biological knowledge
and in the earnestness of the student of heredity. And at the same
time another result may be that the science of biology shall come to
be appraised publicly more nearly at its real value. The biological
worker knows that his science comes into contact with human life at
every point, that a knowledge of the fundamental principles of the
science of life cannot fail to enrich, enlighten, and ennoble the life
of every human being. But the community does not yet realize this, to
its own great loss. Is it not possible that the Eugenist, finding his
fundamentals in biology, by emphasizing the facts of the possibility
and the necessity of controlling human evolution, may be able to bring
to society a vital sense of the importance of this science with a
directness and a vividness which the bacteriologist and hygienist have
not been able thus far to realize? Is it even too much to hope that
the idea that the "humanities" include only the study of man's
comparatively recent past, may now more rapidly give place to a
broader conception which shall include not only the whole of man's
past, but the study of his future as well? Could any ideal be more
vitally, more profoundly human or more worthy of study and devotion,
than this of the production of a race of men, clean and sound in mind
and body? Be that as it may, the development of this bio-social field
can scarcely fail to stimulate strongly the treatment of all social
problems with a strictly scientific method. Nothing less than exact
methods, and results exactly stated, will satisfy