THE LARYNGOSCOPE AND RHINOSCOPY. 



171 



The lens g can also be removed at h. m is a brass arm having three 

 joints, and fastened to the lamp. At the extremity of this arm is a 

 perforated knob, s, through which the handle of the reflector, i, is 

 passed, and which is fastened by a screw. At o is a single charniere 

 joint, which permits of the forward or backward motion of the 

 reflector the illuminating agent being oil. By substituting gas 

 burned through an Argand burner, and fed from any ordinary burner, 

 the apparatus has been made more available, and better light obtained. 

 The following cut represents the improved apparatus as now made. 



Fig. 3. 



It is not necessary to dwell upon the changes. Suffice it that by 

 these the apparatus has been made much more ready and simple in 

 management, and less liable to derangement of focus at important 

 moments when a steady light is needed for intra-laryngeal operations. 

 It is here that we should call a brief attention to the vast strides 

 which, under the influence of the laryngoscope, have been effected in 

 the operative procedures upon this organ. All of these are now made 

 by means of instruments curved at a direct angle to the line of vision, 

 and in none of these operations does the operator directly see the 



