A text-book of diseases of the nose and throat (1904)
Kyle, David Braden, 1863-1916 · Philadelphia ; New York ; London : W.B. Saunders · leaf 42
Fig. 12.—Phillips electric head-lamp. … Fig. 13.—Mackenzie condenser and reflecting mirror. arranged that the rays from the Mackenzie condenser will fall onthe mirror and reflect directly in the median line of the examina- 34 DISEASES OF THE NOSE AND THROAT. tioii chair, which should be stationary. This is a decided advan-tage,…