474 



LIVING TORPEDOS IN BERLIN. 



and large sectional area of the path which it has to follow in the pre- 

 paration when it is placed crosswise. In a transverse direction (except 

 in the incomprehensible effect observed in exp. 4) there is no positive 

 polarisation and only very weak negative polarisation. 



23. 



5. Torp. 2. Day. OC 0-0030. 



Polarisation when the current is led in transversely. 



r. 6. 



XX. 8. | +190 I -140 

 P- \ 134 4 75 



r. &. 



Led in f 32 I 17 f 



79 | 1 16 



o I o 



| 



transversely j 1 16| 79 1 1 1 13 

 r and b signify red and black, the colours of the two halves of the 

 scale, and consequently the direction in which the mirror was deflected. 

 It is seen that under these circumstances there is scarcely any effect. 



24. 



5. Torp. Fresh. 



Proof of the pile-like arrangement of the electromotive force in the polarised 

 preparation of the organ. 



-JB 



BR represents schematically the preparation as a linear conductor, 

 through which the shock of the organ current and the homodromous 

 . current pass from B to R. If positive and negative homodromous and 

 negative heterodromous polarisation depend upon the pile-like arrange- 

 ment of electromotive forces, then in every case polarisation must appear 

 in the same direction between any two given points of the line B R, 

 which would be of the same strength if the distance of the leading-off 

 points is equal; and of greater strength if the distance is greater and 

 the external resistance is sufficient. BRL amounted to 22 mm.,6 2 r 2 

 1 8 mm., b r 1-5 mm., o6 2 =or 2 9 mm., b^r^ about the same. In order 

 not to confuse the results, the positive organ-current force, although 

 observed constantly in every part, has been left out of account. 



A. Homodromous currents, absolutely and relatively positive polarisation. 



CTo".o76 4 . 



XX. 8. I + 205 

 P. I 171 



b,r, 



+ 146 



5.7-0 1 1 New I i, r, 

 + 6 prepa- + 500 + x 

 159 || ration. | 213 



+ 148 

 1 80 



+ 170 

 167 



+ 3i; +12 

 159; 163 



) 



J 47 



B. Homodromous current, absolutely and relatively negative polarisation. 

 CT i"-o2. 



& r 



XX. 8. I -64 

 P. 1 703 



-125 

 703 



-160 

 7*5 



-117 

 707 



711 



& r j & a r, 

 -45 -145 

 7 r 5 I 707 



