ANIMAL ELECTRICITY. LECTURE I. 



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Before. Ether. 



After. 



Fig. 8 (576). — Effect of ether (diethyl oxide, EtoO) upon the electrical 

 responses of isolated nerve. The electrical response is abolished for about five 

 minutes ; it then gradually recovers, and becomes somewhat larger than it was 

 before etherisation. The excitations and responses of the nerve are at intervals 

 of one minute. 



Before. Chloroform. After. 



Fig. 9 (552).— Effect of chloroform (Trichlormethane, CHCI3) upon the 

 electrical responses of isolated nerve. The electrical response is definitively 

 abolished ; there is no recovery during the period of observation. 



