thesis, to wit, that mind and character are functions of the
organism and have their seat not only in the brain but in the
entire organism.

How do the endocrines prove this? As well as they prove that
physical growth and the growth of the secondary sex characters
are dependent on these glands. Take diseases of the thyroid gland
as the first and shining example.

The thyroid secretes a substance which substantially is an
"iodized globulin,"--and which can be separated from the gland
products. This secretion has the main effect of "activating
metabolism" (Vassale and Generali); in ordinary phrase it acts to
increase the discharge of energy of the cells of the body. In all
living things there is a twofold process constantly going on:
first the building up of energy by means of the foodstuffs, air
and water taken in, and second a discharge of energy in the form
of heat, motion and--in my belief --emotion and thought itself,
though this would be denied by many psychologists. Yet how escape
this conclusion from the following facts?

There is a congenital disease called cretinism which essentially
is due to a lack of thyroid secretion. This disease is
particularly prevalent in Southern France, Spain, Upper Italy and
Switzerland. It is characterized mainly by marked dwarfism and
imbecility, so that the adult untreated cretin remains about as
large as a three or four-year-old child and has the mental level
about that of a child of the same age. But, this comparison as to
intelligence is a gross injustice to the child, for it leaves out
the difference in character between the child and the cretin. The