LIVING TORPEDOS IN BERLIN. 



525 



for longer closing-, and that the numerical determinations of 10, 

 in as far as they refer to heterodromous conduction in the organ, 

 are only correct for opening induction shocks. The two-fold 

 dependence of irreciprocal conduction upon density and duration of 

 current may now be represented graphically in the following 

 way. 



In Fig 32 the A -axis of the current densities runs from the zero 

 point forwards and to the left, and the ^-axis of the times of 

 closing, forwards and to the right. The abscissae independent of 



Fig. 22. 



each other on both axes are measured arbitrarily. The homo- 

 dromous resistances W and the heterodromous resistances R are 

 expressed as ordinates on the jf-A-plane. The homodromous re- 

 sistance is independent of current density and duration, and thus 

 the ordinates representing it, have throughout the same arbitrarily 

 chosen height Ow^ and their tops all lie in the plane w lt 2 , 3 , 4 

 parallel to the ^-A-plane. The heterodromous resistance is not 

 perceptibly different from the homodromous resistance, below the 

 current density A s ; the irreciprocity is here apparently zero. 

 Whether it is so in reality, is not yet decided, for I have unfor- 



