Response of Nerve investigated with Electrometer. 303 



tions of the originals, but correspond as regards dimensions with the 

 records upon the photographic plates, The curves are to be read 

 from left to right ; the short line under each indicates 1/100 of a second. 

 In several instances, such as curves (i), (iv), (v), (vi), (vii), and (ix), 

 the escape of the exciting current, arranged to be in the same 

 direction as the change due to the response, is seen preceding this. 

 When present it indicates the moment of excitation. In the actual 

 records this moment was marked on each plate by photographing 

 the movement of the opening key which caused the exciting break 

 induction shock. 



Fm. 1. 



-- ~ -- " 

 S 



(JT) 

 (HD 

 (IT) 

 (VJ 

 <VT) 

 (W) 



(Wf) 



(X) 



