53 6 
MR. F. GOTCH ON THE ELECTROMOTIVE PROPERTIES 
owing to the direction of the excitatory change. The demarcation-current in the 
Torpedo is a strong support for the view that in nerve and muscle the negativity 
of an injured as compared with an uninjured part is the electromotive expression 
of a prolonged local excitatory process occurring in the neighbourhood of the injury. 
In future experiments I hope to follow up the lines of inquiry w T hich have been 
indicated at various points in this research. 
List of Works referred to. 
1. Walsh.—I n a letter to the Loyal Society. ‘ Phil. Trans.’, 1773, pp. 461-477. 
2. Cavendish.— ‘Phil. Trans.’, 1776 (vol. 66, part 1), pp. 196-225. See also ‘The 
Electrical Researches of the Hon. Henry Cavendish,’ edited by J. Clerk 
Maxwell. 
3. Redi.—“ Experimenta circa varias Res Naturales ” (‘ Opuscula,’ vol. 2, p. 60). 
4. Lorenzini. —‘ Osservazioni intorno alle Torpedini,’ Firenze, 1678, p. 104. 
5. J. Hunter.—W orks, vol. 4, p. 515, London, 1835. 
6 . For information on the earlier work, see ‘ Lejons surla Physiologie,’ by H. Milne 
Edwards, vol. 13, 1878-79, pp. 325-362. 
7. Savi.—‘E tudes anatomiques sur le systeme nerveux et sur l’organe electrique de 
la Torpille,’ appended to the ‘ Traite des Phenomenes Electro-physiologiques 
des Animaux,’ by Matteucci, 1844. 
8. Fritsch. —‘ Untersuclumgen liber den feineren Bau des Fischgehirns,’ 1878, 
p. 90. Plate 13. 
9. Ranvier.— ‘Traite technique d’Histologie,’ 1882, pp. 779-803. 
10. Ewald. —“Ueber den Modus der Nervenverbreitung im elektrischen Organ von 
Torpedo,” ‘ Untersuchungen des physiolog. Instituts der Universitat Heidel¬ 
berg,’ vol. 4, part 1. 
11. Colladon.—S ee ‘ Gesammelte Abhandlungen,’ vol. 2, p. 684. 
12. E. du Bois-Reymond.—“ Lebende Zitterrochen in Berlin.” ‘ Archiv Anat. 
Physiol. (Physiol. Abtheilg.),’ 1885, p. 99. 
13. Matteucci. —‘Traite des Phenomenes electro-physiologiques des Animaux,’ Paris, 
1844, 
14. Eckhard. —‘ Beitrage zur Anatomie und Physiologie,’ vol. 1, pp. 159-177. 
15. Marey.— ‘ Comptes Rendus,’ vol. 73, 1871, pp. 918-958. 
16. Marey.—‘P hysiologie Experimentale,’ 1877, pp. 1-63. 
17. Jolyet.— “ Recherclies sur la Torpille electrique,” ‘Ann. sci. nat. de Bordeaux et 
du Sud-Ouest,’ 2 e serie,n° 2 ; ‘ Mem. Soc. Sci. de Bordeaux,’ vol. 5, 1883. 
18. E. du Bois-Reymond. —“Lebende Zitterrochen in Berlin." ‘ Archiv Anat. 
Physiol. (Physiol. Abtheilg.),’ 1885, pp. 86-145. 2. Mittheilung, ibid., 1887, 
pp. 50-110. 
19. E. du Bois-Reymond.—‘A rchiv Anat. Physiol. (Physiol. Abtheilg.),’ 1S87, p. 101. 
