Abbreviations used in Plates. 



Stim. or Stra.: Stimulus. 



Eesp.: Eesponse. 



C. Stim.: Closiug-stimulus. 



O. Stim.: Opening-stimulus. 



E. T.: Equivalent time i.e. time interval corresponding 1 mm. 



of abscissa on oscillogram. 



^m> iSni) i^m- All tlicsB abbreviations represent " Stimulus."' Figures 



in suffix show the order of experiment with respect to 

 time. Where two successive stimuli were used, ]S,„ 

 represents the predecessor in those of the »(th experi- 

 ment, and nSm the si\ccessor in the same set. 



I'm) lEm, ^Em- AH tlicsc abbreviations represent " Piesponsc "". The 



numbers in prefix and suffix show the correspondence 

 of the response to the stimulus having the same 

 respective affixes. 

 2ry D.: Secondary discharge. 



Sry D.: Tertiarv discharge. 



