To the Editor:— In the interesting article by Beck and Rand on "Cardiac Arrest During Anesthesia and Surgery" inThe Journal, Dec. 24, 1949, the authors erred in stating: "One successful case of defibrillation of the human heart, verified by electrocardiogram, in which electric shock was not used was reported by Lampson, Schaeffer and Lincoln. The heart was defibrillated by massage and the use of epinephrine." This is incorrect. In the article referred to, epinephrine was mentioned but the authors specifically pointed out that they believed it to be contraindicated and therefore did not use this drug. Procaine was the drug used, and the authors attributed the restoration of spontaneous heart beat to the procaine.