Kesearches on the Discharg-e of the Electric «Jroau. 



Fig 1. 



O Oscillograph. 



Q Are lamp. 



l-i ('onverg-jng lens. 



••; Slit. 



^' shutter. 



i.-j Cylindrical lens. 



D Registering clruin. 



M Motor. 



ii'i llegnlating resistance for motor. 



J3j, 11, Break-circuit contrivances. 



i' Organ-preparation. 



T Thermostat. 



« Electrodes for indirect stimulation. 



The Plan of Experiment. 



Z], Z. Zinc electrodes for electric organ. 



P Eelay for thermostat. 



E Stimulation-apparatus. 



/ Induction coil. 



A Ammeter. 



/.'._. Regulating resistance for primary 



current of induction coil. 

 /,■ Morse key. 



K Chronograph. 

 (.' Chronometer. 

 Il Resistance box. 

 /r To Kohlrausch bridge. 



