Measuring the Horsepower of That Baby of Yours
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DR. JOHN R. MURLIN, of Cornell University Medical College, has devised an apparatus which causes a baby to record its own horsepower. Horsepower is used in this sense merely as the expression of a unit of energy. Dr. Murlin devised this apparatus for use in the study of the energy requirement of the new-born child.
A baby unconsciously writes the story of its energy by means of its pulse and its breathing. A small cuff is attached to the left leg of the infant above the knee. From this cuff a tube leads to a glass connection, passing through the wall of the incubator and finally to a T-tube on the top of the incubator. One limb of this tube passes to an air-pump and the other to another T-tube. To the second T-tube a mercury pressure gage (manometer) is connected by one limb and a pressure-bottle to the other. From this bottle a transmission-tube leads to a recording drum. Thus with each pulse the baby makes a record.
Oddly enough, the fattest baby produced the smallest degree of horsepower. While sleeping the babies produced an average of .004 of a horsepower. It was determined that the normal heat productionof recently fed, sleeping babies between two months and one year of age is .09 horsepower.