Diseases of the nose and throat; a text-book for students and practitioners . Fin. 93.—Beselers Lime-Light Apparatus. A, shade to protect the eye from the rays of light; B, to connect with oxygen-gas ; C, lime-pencil. spiral, insulated wire, which runs along the handle of the mirrorfrom a small battery. A recent, and often efficient, device for illumination is awell-polished glass rod, one end of which is placed against theneck over the laryngeal region; to the other end is attached acandle or small incandescent electric glow-lamp. As the light istransmitted along the rod, the interior of the
Diseases of the nose and throat; a text-book for students and practitioners . Fin. 93.—Beselers Lime-Light Apparatus. A, shade to protect the eye from the rays of light; B, to connect with oxygen-gas ; C, lime-pencil. spiral, insulated wire, which runs along the handle of the mirrorfrom a small battery. A recent, and often efficient, device for illumination is awell-polished glass rod, one end of which is placed against theneck over the laryngeal region; to the other end is attached acandle or small incandescent electric glow-lamp. As the light istransmitted along the rod, the interior of the larynx is illumi-nated, and can then be examined by the aid of the laryngealmirror, warmed and introduced as described. THE LARYNGOSCOPE AND LARYNGOSCOPY. 345 With the mouth open, the mirror is to be introduced withthe reflecting surface downward, and in such a way as not totouch the tongue; primarily, because the surface of the glass. Fig. 94.—Laryngoscopy; in Position. would be clouded, thus impairing its reflecting power, and,secondarily, as such contact might cause the patient to gag, andso seriously interfere with the examination. The back of themirror should be placed gently but firmly against the base of 346 DISEASES OF THE NOSE AND THROAT. the uvula, if the patient will submit to its presence withoutannoyance; otherwise, it should be held in the mouth in such away as to bring it near the uvula, without, however, touching-it. In some cases it is necessary that the patient protrude thetongue, when it is to be grasped between the linen-coveredthumb and index finger of the physicians disengaged hand orheld by the patient himself; in the latter instance the examinerhas the great advantage of the free use of both hands. In thelarge majority of cases, however, it will not be found necessaryto hold the tongue, as the patient will better control its move-ments if unhampered by its protrusion ; besides, he will be f
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