Handbook of the diagnosis and treatment of diseases of the throat, nose and naso-pharynx / By Carl Seiler.

  • Seiler, Carl, 1849-1905.
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: Handbook of the diagnosis and treatment of diseases of the throat, nose and naso-pharynx / By Carl Seiler. 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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    have carried on for some time past, were so promis- ing in their results that I feel authorized in embody- ing them in the second edition of this small volume, with the hope that others may profit by them. Mounted upon the universal gas bracket is an in- candescent lamp, in place of the Argand burner, upon which is placed the Tobold light-concentrator with its reflector. The necessary current is de- veloped by a small dynamo-machine worked by hand or foot power, or by my galvano-cautery battery to be described later on. The light thus developed is considerably greater than the gas-light, and at the same time somewhat whiter. The lamp alone with- out a concentrator did not give as satisfactory results as with it. A small arc light of the Brush pattern, with slender carbon rods, gives a stronger and whiter light, but is too unsteady for practical use. Perhaps the most satisfactory results I obtained from an in- candescent lamp mounted on the head-band in front and a little to one side of the concave reflector, es- pecially in rhinoscopy, as the strong light, devoid of any heat, enabled me to illuminate the post-nasal cavity much better than could be done with the gas or lamp-light with or without a light-concentrator. I have no doubt that in the near future, when electric lighting will have been adopted universally, as gas is now, electric lamps for the laryngoscope will sup- plant all other sources of light, with the exception of sunlight. Sunlight is certainly the best source of light for the illumination of the interior of the larynx and nasal cavities, but unfortunately it is not available at