Medicine: Duration of Digestion

The most important news which the studious editor of the American Journal of Roentgenology, Dr. Lawrence Reynolds of Detroit, had to impart to his readers last week was that two English x-ray experts have completed the first x-ray studies of how long the healthy human stomach requires to digest various kinds of foodstuffs.

The x-ray method of Drs. William Charles D. Maile and K. J. L. Scott utilizes the shadow effect of one to two ounces of bismuth swallowed with a test meal. That small amount of bismuth does not ascertainably retard digestion,...

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