169 
EXPLANATION OF DIAGRAMS ON PaGeEs 170=172. 
All the whispered words are marked with W. Those marked with 8 
are spoken. The whispered diagrams are generally more perfect than 
those which are spoken. The difference appears to arise from the dis- 
turbing influence of the vibratory action of the vowel sounds, even in 
those cases where, from the adjustment of the instrument, the full 
vibratory action is not visible. 
Tn all the diagrams the silent re-actions are marked with a *. 
In many of the diagrams words are repeated to show the degree of 
exactness which can be attained. 
Page 170.—All the words here represented are spoken, and are in- 
tended to show the effect of compound consonants or double re-action. 
Page 171.—Shows the effect of different adjustments of the instru- 
ment and different speeds. 
Page 172.—Examples of vowel sounds and whispering. 
Soren. Proc. R.D.S., Vou. 11, Pa. it. x 
