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WHAT IS HUNGER? 527
AFTER BREAKFAST
These are the lampblack graphs prepared by the apparatus shown on page 525. The above specimen, consisting of
vertical lines which represent respirations and slight unevennesses. is made by an experiment upon a man who just had
breakfasted on bacon and eggs.
MODERATE HUNGER
'Ibis is a picturization bf the same stomach four hours later. While the respirations continue the same—eighteen i
tlir mill tit,—the breaks are becoming pronounced, signifying that the stomach is beginning to demand lunch.
WHEN HE MISSED LUNCH
This is violent hunger; the patient in question went without food until six o'clock in the evening. The contractions
became extreme, until—at the right of the graph—it will be noted that they ended in a violent tetanus, or cramp.
tached. This marker is so placed that it
brushes against a recording surface
which is wound around a revolving
drum. As the drum turns, the marker
records an even, straight, horizontal line
on the recording surface. If the stomach,
however, contracts, it compresses
the balloon, which acts like any other
rubber bulb when it is squeezed by shooting
"lit the contained air: this pushes up
the liquid in the I'-shaped tube so that
it raises the level in the arm bearing the
float and its marker, and this marker
traces a sharp upward curve on the recording
surface as the drum revolves.
Thus each contraction of the stomach
makes a definite measurable record of its
duration and intensity.
Dr. Carlson has for one of his subjects
a young man, who, as a boy, was unfortunate
enough to swallow accidentally a
strong solution of caustic soda. As a
result of this, the esophagus was closed.
?o that no food could pass from the
mouth to the stomach. An opening
therefore was cut through the abdom-