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GRAPHING HUNGER CONTRACTIONS
Dr. Anton Julius Carlson (on the left) has a patient swallow a rubber balloon. This then is inflated and attached to
the moving lampblack cylinder illustrated. As the stomach of the patient contracts, a paper finder writes a jay^ed
record on thu cylinder. (See page 527.)
WHAT IS HUNGER?
By HERMANN BACHER DEUTSCH. Ph.D.
F R I >M the time when the first
cave-baby yelled for a piece of
underdone tiger-steak, while
tiger kittens all around were
yowling for double portions of
cave-baby rare, the members of the human
race have experienced hunger.
I lunger is not only one of the primitive
sensations, but the primitive sensation,
which has actuated all protoplasm, from
the original protozoan up to the flat-
Cm .ted biped who dignifies and flatters
himself with the zoological name of
Homo sapiens.
And yet—ask yourself what hunger is,
or rather, try to answer that question.
If you are a normal human being, there
probably have been very few days in
your life when you have not experienced
hunger in some degree. More than this,
you have never been in doubt about the
sensation, have never confused it with
any other desire, but have always been
able to recognize it instantly.
For the past four years, Professor
Anton Julius Carlson, of the Department
of Physiology of the University of Chicago,
has been studying the problem of
the hunger mechanism, not only in man.
but in the lower animals as well. Dr.
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