20 Gee, The Electrical Resistance of the Human Body. 



broken, the current being started and stopped by means 

 of an ordinary knife-switch. 



Table VIII. 



In the preceding Table, " C " is used to represent a 

 considerable muscular contraction, and " c ", a smaller 

 contraction. The hands were as usual immersed in Salt 

 Solutions. 



Human Telegraphy. The distinction between the 

 cathode and the anode effects suggested the application 

 for the purpose of telegraphy. The arrangement shown 

 in the accompanying Plate was found to be suitable. 



A battery of from five to ten dry cells in series, was 

 connected through an ordinary " tapper " commutator 



