INORGANIC RESPONSE 113 



be no continuous balance, and we obtain instead a very 

 interesting diphasic record. I give below an exact re- 

 production of the response-curves of A and B recorded 

 on a fast-moving drum. It will be remembered that 

 one point was touched with Na 2 C0 3 and the other with 



A 



FIG. 66. DIPHASIC VARIATION 



a) Records of A and B obtained separately. R' is the resultant by algebraical 

 summation. (6) Diphasic record obtained by simultaneous stimulation of 

 A and B. 



"^""v, 



KBr. By suitably increasing the amplitude of vibration 

 of the less sensitive, the two deflections were rendered 

 approximately equal. The records of A and B were at 

 first taken separately (fig. 66, a). It will be noticed that 

 the maximum deflection of A was attained relatively 



I 



