Medicine: The Heart (Cont'd)

Like the chicken-or-the-egg dilemma, a question that has long puzzled medical men is: Where originates the impulse that makes the heart beat? Some have contended that the heart nerves originate the impulse; others, that it begins in the muscle of the heart. Last week 22 authorities, 150 clinicians and 1,800 physicians attending the New York Academy of Medicine's graduate fortnight on the heart saw a microscopic motion picture of a first heart beat and considered the problem settled.

Dr. Bradley Merrill Patten, embryologist of Western Reserve University, showed a film, taken with...

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