Chronic diseases of the larynx : with special reference to laryngoscopic diagnosis and local therapeutics / By Dr. Adelbert Tobold ... Tr. from the German and ed. by George M. Beard ... With an introduction on the history and art of laryngoscopy and rhinoscopy ... by the editor.
- Tobold, Adelbert, 1827-1907.
- Date:
- 1868
Licence: Public Domain Mark
Credit: Chronic diseases of the larynx : with special reference to laryngoscopic diagnosis and local therapeutics / By Dr. Adelbert Tobold ... Tr. from the German and ed. by George M. Beard ... With an introduction on the history and art of laryngoscopy and rhinoscopy ... by the editor. 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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![another to minutely inspect each separate portion of the vocal apparatus, making an accurate diagnosis of the nature and extent of any morbid process that may be present. Furthermore, it is conclusive that, in all operative procedures in the larynx, as well as in making the ordinary local applica- tions, there is need of the very best illumination that can be obtained. ]STor is this all: the light should be, in a measure, uniform. The examiner should, so far as possible, become accustomed to the use of one kind or degree of light, in all his investigations. The apparatus should also be one that can be readily adjusted for different lights. These conditions are very fully met in the apparatus of Dr. Tobold, as described by him in his Lehrbuch der Laryngoscopie (Text-Book of Laryngoscopy.) Fig. 1. tobold's apparatus for illumination. Two powerful convex glasses (c and d) of equal refraction, are fastened in a brass tube, one before the other, close to the cylinder of a lamp. A ring separates them one line apart, so](https://iiif.wellcomecollection.org/image/b21001017_0030.jp2/full/800%2C/0/default.jpg)
