The Adrenal glands, one on each side of the body, above and
adjacent to the kidney. These glands, which are each made up of
two opposing structures, stand in intimate relation to the
sympathetic nervous system and secrete a substance called
adrenalin.

The Sex organs, the ovary in the female and the testicle in the
male, in addition to producing the female egg (ovum) and the male
seed (sperm), respectively, produce substances of unknown
character that have hugely important roles in the establishment
of mind, temperament and sex character.

Without going into the details of the functions of the endocrine
glands, one may say that they are "the managers of the human
body." Every individual, from the time he is born until the time
he dies, is under the influence of these many different kinds of
elements,--some of them having to do with the development of the
bones and teeth, some with the development of the body and
nervous system, some with the development of the mind, etc. (and
character), and later on with reproduction. These glands are not
independent of one another but interact in a marvelous manner so
that under or overaction of any one of them upsets a balance that
exists between them, and thus produces a disorder that is quite
generalized in its effects. The work on this subject is a tribute
to medicine and one pauses in respect and admiration before the
names and labors of Brown, Sequard, Addison, Graves and Basedow,
Horsley, King, Schiff, Schafer, Takamine, Marie, Cushing, Kendal,
Sajous and others of equal insight and patient endeavor.

But let us pass over to the specific instances that bear on our