IN HUMAN PHYSIOLOGY. id 



The higher notes require the vocal cords to be compara- 

 tively shorter, tighter, and more closely approximated 

 together; whilst the lower notes demand opposite condi- 

 tions. A high note, furthermore, implies greater rapidity 

 in the movement of the air through the glottis ; but the 

 quantity of air passing is larger during the production of 

 a low note. 



The volume or loudness of the voice depends mainly 

 on the combination of quantity of air with greater force 

 of expulsion. Loudness, with clearness, also demands a 

 peculiar resonance up in the nasal cavities and sinuses. 

 Lastly, the unnatural or falsetto voice seems also to be 

 produced by some tensive change effected in the upper 

 part of the pharynx at the back of the nose : hence it is 

 called by singers the head voice, in contradistinction to the 

 ordinary, or chest voice. MARSHALL. 



2. Why can we see our breath on a frosty morning? 

 The vapor of the breath is condensed by the cold air. 



3. When a law of health and a law of fashion conflict, 

 which should we obey ? 



It depends, of course, whether we prefer to be fashion- 

 able or to be healthy, to obey man or God. With too 

 many people the former is of far greater importance, and 

 in selecting an article of dress, few ask or think about 

 the latter. The consequence is seen in the weakened 

 frame, the prevalence of disease, and the shortened life. 

 God's laws written in our bodies cannot be violated with 

 impunity. 



4. If we use a " bunk " bed, should we pack away the 

 clothes when we first rise in the morning ? 



No. They should first be thoroughly aired. 



