Selected monographs : Czermak on the practical uses of the laryngoscope. Dusch on thrombosis of the cerebral sinuses. Schroeder van der Kolk on atrophy of the brain. Radicke on the application of statistics to medical enquiries. Esmarch on the uses of cold in surgical practice.

  • New Sydenham Society.
Date:
1861
Catalogue details

Licence: Public Domain Mark

Credit: Selected monographs : Czermak on the practical uses of the laryngoscope. Dusch on thrombosis of the cerebral sinuses. Schroeder van der Kolk on atrophy of the brain. Radicke on the application of statistics to medical enquiries. Esmarch on the uses of cold in surgical practice. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

    53/368 (page 35)
    PHYSIOLOGICAL OBSERVATIONS. Befoee commuuicating my owu observations made by the aid of autolaryngoscopy ('Bib./ No. 3), I must first confirm tlie correctness of tbe results published by Garcia, in relation to the following points: 1st. In quiet breathing, the glottis remains widely open. 2d. The arytenoid cartilages perform very rapid and independent movements, when the glottis is contracted during pronunciation. 3d. During the emission of sounds from the chest, or of a shrill voice, the ejjiglottis assumes a different position, and is more or less distant from the arytenoid cartilages. 4th. The superior vocal cords^ exert no influence upon the pro- duction of the voice; this is only produced, as J. Miiller has proved, by the vibrations of the inferior vocal cords, distinctly to be seen, unless the sounds are too high, when the vibrations are so numerous as to become imperceptible the inferior llgamenU, at the hottoni of the IwryiiXfform exclusively/ the voice, whatever may he its register or its intensify, for they alone vibrate at the bottom of the larynx)? I reserve for future consideration tbe other assertions put forth by Garcia. Section I.—General sketch of the Internal Arrangement of the Larynx during Bespiration, When I examine the depth of the pharynx with my autolaryngo- scope, the head being previously inclined backwards, the mouth widely open, and the tongue flattened, without protruding from the mouth, I perceive, in the almost semilunar space bounded by the ' Tlie upper folds of the glottis, tiic superior thyro-aryteiioid ligaments, or the false vocal cords. ' Garcia, op. cit., p. 221,