1862.] . 89 



May 15, 1862. 

 Major-General SABINE, President, in the Chair. 



Dr. William Stokes and George Johnstone Stoney, Esq., were ad- 

 mitted into the Society. 



The following communications were read : 



I. "On the Sensory, Motory, and Vaso-Motory Symptoms 

 resulting from Refrigeration and Compression of the Dinar 

 and other Nerves in Man." Second Communication. By 

 AUGUSTUS WALLER, M.D.,F.R.S. Received April 12, 1862. 



In the f Proceedings of the Royal Society/ No. 46, I have given 

 a brief account of the effects of refrigeration of the ulnar nerve in 

 man, by the application of ice. After repeated experiments on this 

 nerve on myself, I never had occasion to witness any permanent 

 disturbance in the nerve from the application of the ice, beyond a 

 slight hypersesthesia, which may have been partly due to the increased 

 attention of the mind directed to the part whose functions were under 

 investigation. 



The like immunity does not extend to experiments in which a 

 much greater degree of cold is employed, as will be seen from the 

 following instance : 



September 13, 1861. A freezing mixture, consisting of equal parts 

 of pounded ice and common salt, was applied to the elbow of the left 

 arm over the ulnar nerve. The subject of the observation was a 

 gentleman in perfectly sound health, aged twenty-seven. 



Before the application of the mixture, the temperature between the 

 little and ring fingers and the index and median was the same. Suc- 

 cessive observations gave the following results : 



