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Dr. A. Waller and A. de Watteville. [Dec. 7, 



December 7, 1882, 



THE PRESIDENT in the Chair. 



The President announced that he had appointed as Vice-Presi- 

 dents : — 



The Treasurer. 



Mr. J. Ball. 



Professor Lister. 



Professor Prestwich. 



The Marquis of Salisbury. 



Mr. Frederic Ducane Godman, Mr. Jonathan Hutchinson, and 

 Mr. Walter Weldon were admitted into the Society. 



It was announced that the question of the re-admission into the 

 Society of Dr. H. E. Armstrong would be put to the vote at the next 

 meeting. 



The Presents received were laid on the table, and thanks ordered 

 for them. 



The following Papers were read : — 



I. " On the Alterations of the Excitability of the Sensory 

 Nerves of Man by the Passage of a Galvanic Current." By 

 A. Waller, M.D., and A. de Watteville, M.A., B.Sc. 

 Communicated by Dr. Burdon SANDERSON, F.R.S. Re- 

 ceived October 26, 1882. 



Hitherto the only experiments concerning this subject have been 

 made on animals, the degree of sensory excitation being estimated by 

 the amount of reflex action produced.* During our experiments on 

 the alteration of excitability in the motor nerves of man we had the 



* Zurlielle, " De Nervorum Sensitirorum Irritibilitate in Statu Electrotoni," 

 Berlin, 1864. Also " Untersuchungen aus d. Physiol. Labor, zu Bonn," 1865, p. 80. 

 (Reference in Hermann, " Handbuch der Pkysiologie," 1879, rol. ii, part i, pages 46, 

 47.) Hallsten, " Elektrotonus i Sensibla Nerver," " Nordiskt Med. Arkiv." 1880, 

 vol. xii, part v. (A.nd in Du Bois Reymond's " Archiv," 1880, page 112. Reference 

 in Virchow's " Jahresbericht," 1810, pages 202, 204, by Glad and Panuin.) 



