Diseases of the nose and throat; a text-book for students and practitioners . sily controlled; but it is not alwayssufficiently powerful for examining the trachea, when it may benecessary to employ electricity, magnesium wire, oxyhydrogen,lime, or some equally powerful illuminant. A very good light,as suggested by Sajous ( Diseases of the Nose and Throat ), isobtainable by dropping a small piece of gum-camphor into thetank of an oil-lamp. Transillumination, by placing an illumi-nated glass rod against the skin surface, is sometimes of value. 16 DISEASES OF THE NOSE AND THROAT. When ready for t
Diseases of the nose and throat; a text-book for students and practitioners . sily controlled; but it is not alwayssufficiently powerful for examining the trachea, when it may benecessary to employ electricity, magnesium wire, oxyhydrogen,lime, or some equally powerful illuminant. A very good light,as suggested by Sajous ( Diseases of the Nose and Throat ), isobtainable by dropping a small piece of gum-camphor into thetank of an oil-lamp. Transillumination, by placing an illumi-nated glass rod against the skin surface, is sometimes of value. 16 DISEASES OF THE NOSE AND THROAT. When ready for the examination the room should be dark-ened. If sunlight be the iliuminant, it is best to have a smallhole in the shutter or blind, through which the pencil of raysmay pass; but a good examination may be made without dark-ening the room. Where direct artificial illumination is used, thelight is placed ten or twelve inches in front of the patients examiner either stands or seats himself before the patient,with the light passing into the nostril. In this position he. Fig. Akgand with Three Arms. places one hand and arm on each side of the light,—an awk-ward position, and one which hinders the free movements soessential to easy examination and operation. The presence ofthe bright light is a further hindrance, but this may be keptfrom the patients eyes by a shade, and from the examiners bya screen or reflector placed between him and the luminous is much better, therefore, to use reflected artificial light, whenthe luminous point should be nearly on a level with the patientsear and a little behind it. If the light be a strong one, such as RHINOSCOPY EXAMINATION OF THE NASAL PASSAGES. 17 the lime-light, it may be conducted through a tube passing overthe operators shoulder and opening near the patients nose(Fauvel and Mackenzie). A small incandescent lamp may beattached to the front of a head-band (photophore), by which thelight is thrown directly to th
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