VI. Diphtheria and Influenza—Crossed Eyes
Regarding the question about the flu, it is related to all the diseases, such as bronchitis, that can afflict the human head or the organs of the upper chest, but I will refer particularly to illnesses such as diphtheria and influenza that are so widely prevalent just now. These diseases afflict the upper part of the human body, and they have a definite peculiarity. They can best be studied by examining diphtheria; here one really can learn the most.
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