A practical treatise on the diseases of the ear : including a sketch of aural anatomy and physiology / by D.B. St. John Roosa.

  • Roosa, D. B. St. John (Daniel Bennett St. John), 1838-1908.
Date:
1878
Catalogue details

Licence: Public Domain Mark

Credit: A practical treatise on the diseases of the ear : including a sketch of aural anatomy and physiology / by D.B. St. John Roosa. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    is, in most cases, vastly inferior to the use of the catheter or Politzer's method. I may add a word about the last-named means of examining the Eustachian tube, namely, bougies. Filiform catgut bougies may sometimes be employed with advantage in determining if the non-entrance of air by the catheter or Politzer's method be due to a stricture; but the need for their enrolment occurs only in a very limited number of cases, and when they are used great care and judgment are necessary. This subject will be fully discussed in the chapter on Chronic Non-suppu- rative Inflammation of the Middle Ear. It will be understood by the reader that very many cases of aural disease—for example, those of the external auditory canal—will not require the exhaustive examination that has just been detailed, yet many cases ivill require a systematic and complete observation, such as I have attempted to delineate, in order to a diagnosis which shall be exact and consequently valuable. The time thus consumed is sometimes considerable, but not as great in amount as those who simply read these descriptions will perhaps imagine. The details occupy more in description than in execution ; and their strict performance will of themselves in time make those who carry them out good observers of the phenomena of disease.