house-tired, shop-tired, or office-tired, and take on a physical
exercise, such as walking, climbing, tennis playing or golf playing,
to their injury. Such tired hearts are not ready yet for added
physical exercise; they should be rested first.

The treatment of this cardiac tire is not complete until the
tonsils, gums, teeth and the nose and its accessory sinuses are in
good condition. Various other sources of chronic poisoning from
chronic infection should of course be eliminated, whether an uncured
gonorrhea, prostatitis, some chronic inflammation of the female
pelvic organs, or a chronic appendicitis.

Longcope [Footnote: Longcope, W. T.: The Effect of Repeated
Injections of Foreign Protein on the Heart Muscle, Arch. Int. Med.,
June, 1915, p. 1079.] has recently shown that repeated, and even at
times one protein poisoning can cause degeneration of the heart
muscle in rabbits. Hence it is quite possible that repeated
absorption of protein poisons from the intestines may injure the
heart muscle as well as the kidney structure; consequently, in heart
weakness, besides removing all evident sources of infection, we
should also give such food and cause such intestinal activity as to
preclude the absorption of protein poison from the bowels.




CLASSIFICATION OF CARDIAC DISTURBANCES


For the sake of discussing the therapy of cardiac disturbances in a