180 



Dr. A. D. Waller. 



Experiment 9. Direct Excitation. Similar Observation, more closely taken, 

 with Photographic Records. Berne Coil ; 2 L. ; Tetanisation ; + and - 

 signify outgoing and ingoing. 



Similar results were observed in other observations of similar type 

 (as well as in experiments according to the A, B, C plan, vide infra), 

 weak excitation of the fresh pad giving ingoing, and strong excitation 

 outgoing response. Weak subsequent to strong excitation gave no 

 effect, while the latter gave regular outgoing effects. 



Twenty -four hours post mortem weak excitation gave no effect ; with 

 strengthened excitation the first visible effect was outgoing, and with 

 strong excitation the outgoing effect was generally larger than on the 

 day of death. 



In general the outgoing effect is the far more prominent and regular 

 phenomenon ; the conditions most favourable to manifestation of the 

 less prominent and more evanescent ingoing effect being a fresh skin 

 and not too strong excitation. With lapse of time, or as an imme- 

 diate consequence of strong excitation, the ingoing effect of weak 

 excitation is abolished. 



