This little brochure contains a series of short generalizations designed to state definite facts on disorders of the heart and blood vessels. The first portion deals with cardiac arrythmias, angina pectoris, endocarditis, myocarditis, myocardial infarction, congenital cardiopathies and cardiac insufficiency. The second portion is concerned with vascular abnormalities such as arterial and venous abnormalities and hypertension. Myocardial infarction is dealt with as follows: "The clinical syndrome is extremely variable but can be grouped into two types, one in which anginal pain predominates and the other characterized by cardiac insufficiency.... The anginal form is characterized by four essential signs: pain, fall of arterial blood pressure, pericardial friction rub and fever.... Pain opens the scene brutally, is agonizing and persists for hours or even days: it is also literally insupportable.... Fever appears typically on the second day, is constant, and oscillates between 38 and 38.5 degrees C. It is accompanied by leukocytosis."