iv.] ELECTRICAL ORGANS 75 



papers to you because either nerve or muscle or electrical tissue 

 are favourable objects upon which to demonstrate blaze-currents 

 they are, in fact, among the least favourable objects for this 

 purpose but because their secondary electromotive action or 

 response, as described by du Bois-Reymond, presents points of 

 similarity with the currents that are now engrossing our 

 attention. 



Those of you who do not read German may refer to the 

 Translations of Foreign Biological Memoirs (Oxford, 1887), 

 edited by J. Burdon-Sanderson. And any one who is specially 

 interested in the phenomena of electrical fishes should also 

 read in the original the two memoirs by Gotch, published 

 fifteen years ago in the Philosophical Transactions. For a 

 student preparing for examination, the general summary by 

 Gotch in Schafer's Text-book of Physiology will be more than 

 sufficient. 



REFERENCES 



Du BoiS-REYMOND. " Ueber secundarelektromotorische Erscheinungen 



am Muskeln, Nerven, und Elektrischen Organen," du Bois-Reymond 's 



Archiv, p. i, 1884. 



Du BoiS-REYMOND." Lebende Zitterochen zu Berlin." Ibid., p. 86, 1885. 

 GOTCH. " The Electromotive Properties of the Electrical Organ of Torpedo 



Marmorata," Phil. Trans. Roy. Soc., p. 487, 1887, and p. 329, 1888. 

 GOTCH. "The Physiology of Electrical Organs," Schafer's Text-book of 



Physiology, vol. ii., p. 561, 1900. 



