THE KHYTHM OF OXIDATIVE PROCESSES 



281 



only by. the sensitive interference method able to register mechanical 

 shifts of some fractions of a micron which Vw beyond the resolving 

 power of an ordinary microscope. 



Thns, when observing the snrface of an isolated cricket ganglion, 

 periodic oscillations can be revealed by a shift of interference hands, 

 which approach by their freqnency the characteristic slow processes of 

 oxygen utilization or oscillations of direct current potential (Fig. 8(a)). 





(a) 



(b) 

 Fig. 8(a). — Interference lines for the surface of the active gangHon of the cricket; 

 (b) Interference Unes for the inactivated ganghon surface. 



This structural motility is also correlated with the functional state. 

 It is cut off under anaesthesia, or on the loss of viability, or upon any 

 injury, in almost the same way as was shown for simple objects in 

 respect of the rhythm of oxidative processes. By now the comparison 

 of the ultrastructural motility with other periodical phenomena 

 proceeds by the outward appearance only. A judgment of the extent 



