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Dr. Robert Harrington gently strapped Jimmy into the harness of a gadget called the pneumograph.

Everything worked like a clock, an altimeter or a pneumograph.

This was done by means of the so-called pneumograph, attached to which was a lever recording the thoracic expansion and contraction.

This arrangement is possible except in those instances where connections pass clear through from the interior of the chamber to the outside, namely, the food-aperture, air-pipes, water-pipes, electrical connections, and tubes for connections with pneumograph and stethoscope; but the apparatus is so arranged as to have all of these openings in one part of the calorimeter.

Of the five connections appearing through the opening, reading from left to right, we have, first, the rubber connection with the pneumograph, then the tubing for connection with the stethoscope, then the electric-resistance thermometer, the telephone, and finally a push button for bell call.