structure was erected. There is
no prettier sample extant of the powers of the inductive method.

Not that there are no triumphs of the quantitative method in store for
the biologist. Already, the materials of the Mendelians have become
basic parts of his structure. And today, in pursuit of the solutions
of hundreds of the problems of living matter, chemists and
physiologists are employing the most precise standards, units, and
measures of the physical sciences. Blood chemistry of our time is a
marvel, undreamed of a generation ago. Also, these achievements are
a perfect example of the accomplished fact contradicting a priori
prediction and criticism. For it was one of the accepted dogmas of the
nineteenth century that the phenomena of the living could never be
subjected to accurate quantitative analysis.

However desirable the purely quantitative experimental methods may be,
they naturally need always to be preceded by the qualitative studies
of direct observations. Inevitably there will be numberless errors,
apparent and real inconsistencies and contradictions, and ideas that
will have to be discarded. Just the same there is no other method of
progress. Every bit of evidence points towards the internal secretions
as the holders of the secrets of our inmost being. They are the well
springs of life, the dynamos of the organism. In trailing their scent
we appear to be upon the track not only of the chemistry of our
bodies, but of the chemistry of our very souls. An increasing host of
factors and studies marshal themselves solidly for that declaration.
Endeavor to conceive the consequences and possibilities for the
future. A synthesis of the known in the field provides even now a
means of understanding and control of the perplexities of human nature
and life that are like a vista seen from a mountain top after the
lifting of a fog.

The most precious bit of knowledge we possess today about Man is that
he is the creature of his glands of internal secretion. That is, Man
as a distinctive organism is the product, the by-product, of a number
of cell factories which control the parts of his make-up. Much as the
different divisions of an automobile concern produce the different
parts of a car. These chemical factories consist of cells, manufacture
special substances, which act upon the other cells of the body and so
start and determine the countless processes we call Life. Life, body
and soul emerge from the activities of t