The recognition of the importance of the retention of sodium in the aggravation or in the production of the phenomena of congestive heart failure has directed attention to methods that will diminish the sodium content of the body in the therapy of disorders characterized by these phenomena. Two procedures are used to accomplish this purpose. One procedure consists of the use of a diet that is extremely poor in salt. It is now possible to remove salt which is naturally present in foods so that diets may be prescribed that have all the essential foodstuffs and yet are extremely poor in sodium. The other procedure is the use of powerful diuretics that produce a disproportionately greater excretion of sodium chloride than of water. In clinical practice, both procedures are frequently used together. There can be little doubt of the efficacy of this regimen and that the introduction of this therapy