The use of the laryngoscope in diseases of the throat : with an appendix on rhinoscopy / by Morell Mackenzie.

  • Mackenzie, Morell, 1837-1892.
Date:
1865
Catalogue details

Licence: Public Domain Mark

Credit: The use of the laryngoscope in diseases of the throat : with an appendix on rhinoscopy / by Morell Mackenzie. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

    42/160
    CHAPTER II. DESCRIPTION OF THE LARYNGOSCOPE. Definition.—An instrument for obtaining a view of the interior of the larynx during life. It consists of two parts: 1st, a small mirror fixed to a long slender shank, which is introduced to the back of the throat; and 2dly, an apparatus for throwing a strong light (solar or artificial) on to the small mirror. For thus pro- jecting the luminous rays, most laryngoscopists employ a second (larger) mirror, which reflects the light from a lamp or the solar rays. When artificial light is employed, this illuminating mirror is slightly concave; when sunlight is used, its surface is plane. Section I.—The Laryngeal Mirror. THIIE laryngeal mirror may be made of polished steel, or of glass backed with amalgam. Though, on theoretical grounds, the steel mirrors give the more perfect image, they so readily become tarnished and rusty from the least moisture, are so immedi- ately spoiled by the accidental contact of the medi- cated solutions used in treating laryngeal disease, and so soon become scratched in cleaning, that they