98 PROCEEDINGS OF THE AMERICAN ACA.DEMY 



TABLE VIII. 



Electrodes. — Platinum, Platinum. 

 Load. Current. Remarks. 



1 .450 Harsh and loud. 



2 .560 



3 .670 Uncertain ; sometimes good quality. 



4 .230 Harsh; fluttering. 



TABLE IX. 



Electrodes. — Carbon, Carbon. 

 Load. Current. Remarks. 



1 .360 Harsh and loud. 



2 .560 Somewhat shrill ; good quality. 



3 .620 Good quality, somewliat rough. 



4 .545 " " fluttering. 

 4.5 .225 Faint and rough. 



5 .140 Faint. 

 5.5 .050 



