and prolonged ; there ia a struggle between retaining and releasing the air, and with the well- endowed artiste the larynx preserves its position, notwithstanding the great variety of sounds which it emits But the evolutions of the parts are multiplied, the vocal lips vibrate, and 1 the configuration of the cavity modifies the sounds whioh are formed in the glottis, and determine tbe tone of the voice. The most energetic effortß of the will cannot change this tone in any sen sible manner. Professors in jure their pupils by prescribing the position of the mouth, from which perhaps they themselves derive an advantage. It is interesting to watch the play of the organs by the help of the laryngoscope, and see the changes which succeed one another in the low and high notes. At the moment when the sound issues, the glottis is exactly closed ; then the orifice becomes a very long figure, pointed at the two extremities. As the sound rises, the vocal lips approach each other, and seem to divide the orifice into twojjparts ; then as the highest notes are sounded, there is but a slit the width of a line. The vocal lipi change like the glottis'; they stretch out, harden, thicken, ~ and vibrate more and more aa the voice rises ( Women, who have a smaller larynx and shorter vocal lips, can sing higher notes than men, with a tone less powerful, but sweeter, more uniform, and melodious.
