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.)

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    paper to the Royal Society of London, entitled Physiological Observations on the Human Voice.* This paper contained an admirable account of the action of the vocal cords during inspiration and vocalization; some very important remarks on the production of sound in the Larynx, and some valu- ble reflections on the formation of the chest and falsetto notes. M. Garcia's laryngoscopy investiga- tions were all made on himself; indeed, he was the first person who conceived the idea of an autoscopic examination. His method, which he believed had never been employed by any one before, consisted in intro- ducing a little mirror, fixed to a long stem, suitably bent, to the top of the pharynx. He directed that the person experimented upon should turn toward the sun, so that the luminous rays falling on the little mirror should be reflected into the larynx ;f but he added in a foot note, that if the observer * Proc. Royal Soc. London, vol. vii, No. 13, 1855. Philosoph. Magazine and Journal of Science, vol. x, p. 218, and Gaz. Heb- dom. de Med. et Chir., Nov. 10, 1855, No. 46. f It is worthy of note, that Garcia really never followed this plan, but, in point of fact, always used a second mirror for throwing the solar rays on to the laryngeal mirror. In the mirror which he used as reflector, he also saw the autoscopic image.