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The author explains in the preface of this volume that the studies reported were originally intended for publication in scientific journals but were published in book form to save time. This is the reason for many repetitions which appear in the twenty-two chapters of text.
A long series of experiments is recorded, which were designed to demonstrate central and sympathetic pathways in the nervous system involved in the mechanisms which mediate retraction and proptosis, paradoxic and absolute, of the membrana tympani and of the dilator tubae auditivae. The experiments themselves are of such complexity and present so many possibilities of confusion in control that many of the conclusions drawn are unconvincing. No exception can be taken to what the author refers to in each analysis as "the Facts." The data are described as being confirmed by autopsy, but no microscopic material of importance is presented.
In the discussion of each