APPENDIX. 471 



7. 

 2. Torp. Fresh. L 25 mm. OC 0-0079. 



X.S. t +38 I -140! T55 I -58 t +45 I ~42 t +44 I -3<> 

 P. | 68-9 I 42.7 I 68.9 I 58-8 | 62.4 1 57.3 ] 62-4 1 59 



"With a closing time ten times longer than in the preceding series but 

 still short, negative polarisation already shows itself more strongly. 



8. 



3. Torp. Fresh. OC 0-0133. 3 -'-P. 



CT 2i"-78. 



X.S. I -424 t -260 | -398 t ~ 2 ? 

 P. | 564 to 515 | 589 to 564 j 548 to 484 ) 573 to 548 



This series shows pure positive polarisation with a longer closing 

 time, together with an appreciable sinking of the polarising current. 



0. 



3. Torp. 2. Day. 0(7 0-0044. l 'P. 



CT ".0032. 



XX.- 8. t +31 I -55 t +57 I -5.5; 6t +58 I -3'5t44| -3t +5 | -3-5>&c. 

 P. I 12 I 6 | 14 I 6-5; 6.5 I 12 1 6-5 | 12! 6 | 8-5 I 6-5 



The same result as with ten Groves and the same closing time. 



10. 

 2. Torp. Fresh. L 29mm. 2 -'P. 



aro".o 7 6 4 . 10 



XX. 8. t +280 I -45 t -4-50) -45 t +44 I -34 1 + 34 I -57 t +3 I -52 

 P. | 274 I 91 I 266 4 92 | 237 i 104 I 237 J 108 | 232 | 112 



20 



8. t +26 I -42 t +23 I -37 t -9 I -37 t ~ 10 I -34 t ~ J 4 I -33 

 P. | 232 | 104 j 224 ; 125 | 208 I 125 | 195 | 125 j 195 i 125 



30 

 8. t-i6| -30 t -18.5 | -28|-2o I -31 t- 21 I -Sot-23 I -29 



p. j 191 j 129 j 191 I 141 j 191 4, 141 | 183 j 145 i 170 ; 141 

 This series, in which thirty alternations of current at intervals of 

 two mm. each, lasted for an hour, expresses very fully the law graphically 

 represented in Fig. 17. After the I5th alternation the phenomenon of 

 polarisation showed itself in the manner described by Sachs in the 

 Gymnotus (see Sect. 10). 



