se problems, the vital question of why an organism permits itself
to be attacked is pushing itself to the front. Why a peculiar ailment
selects its victim, why the bacillus finds a fertile soil, is the
neglected problem, which must be solved before the abolition of
disease and its carriers will be remotely conceivable.

Long ago, Hippocrates, revered founder of the art of medicine,
recognized that there was a specific affinity of disease for
individuals with more or less the same characteristic somatic and
psychic traits and trends. Tuberculosis, for instance, was noted for
its frequency in long-skeletoned, thin persons, remarkably optimistic.
And the plethoric, choleric nature of the sufferer from gout has
become proverbial. Before the era of the great bacteriologic
discoveries of the eighties and nineties, the concordance of esoteric
racial and personal markings was a great help in diagnosis to the
physician. For he realized, though he sometimes credited it to his
clinical intuition, that it was a certain type of personality that was
liable to the specific disease.

But personality and its reactions, normal and abnormal, are determined
by the endocrines. So we should find that particular infections
run with special internal glandular predominances. For the picture
presented by an infection, temperature, rash, prostration, are the
details of the general reaction of the organism in the face of a
new situation, the presence of a powerful, destructive invader.
Information has accumulated that the invader is powerful and
destructive, as well as selective, because of endocrine deficiency of
one sort or another in the body it has attacked. Work of a number of
investigators has indicated that an individual's susceptibility or its
reverse, resistance, is intimately subjected to the derangements or
harmonies of the endocrine system.

Comparison of the endocrine type and the disease assaulting has
yielded an even more interesting principle. Knowing the state of the
internal secretion reservoirs enables us to predict the liability to
certain of these infections of childhood. Diphtheria has been found to
occur most virulently among adrenal poor individuals. Moreover, they
are left poorer in adrenal afterwards. It follows that they would be
assisted by the feeding of adrenal. Mumps is a sickness that sometimes
permanently injures the gonads: the testes or ovaries. The thyroid
dominant, whose system is rich in thyroid, will rarel