404 VOICE AND SPEECH. 



epiglottis raised considerably higher. The cartilaginous portion 

 of the glottis still appears to be closed, and there is no evidence 

 of a forward movement of the capitula Santorini. When the next 

 note higher was sung, a very noticeable change in the quality of 

 the voice was heard, and, by examining the photographs taken 

 while that note was being sung with that representing the note 

 below it, it can be seen that a slight change in the mechanism 

 occurred. The epiglottis is depressed. The vocal bands are 

 longer and narrower, their edges are straighter, and the chink of 

 the glottis, which in the note before the break was closed in front, 

 has opened from the anterior to the posterior commissure, and is 

 considerably increased in size. The cartilaginous glottis still 

 appears to be closed. The arytenoid cartilage on the right side 



D 



No. 1. No. 2. 



FIG. 226. PAIR 6. 



occupies the same position as before the break, but the left has 

 moved a little backward. 



" The voice now ascends the scale until D, treble clef, fourth 

 line, is reached, when it can be seen that the epiglottis is slightly 

 raised, the vocal bands appear to be increased in length and de- 

 creased in width, and the arytenoid cartilages are turned further 

 forward and brought closer together. The chink of* the glottis is 

 still open from front to back, and is altogether larger than in the 

 lower note of this register. The apparent increase in the length 

 of the vocal bands is partly due to the fact that the cartilaginous 

 portion of the glottis is now beginning to open. This note is as 

 high as this subject can sing with ease. 



" In many particulars the action of this larynx is the reverse 

 of that just examined. In this the cartilaginous glottis does not 

 appear to begin to open until the highest notes are reached. In 

 the lower register the chink of the glottis decreases instead of in- 

 creases in size as the voice ascends. At the lower break the vocal 



