REGENERATION OF NERVOUS TISSUE. 65 



The general results of the experiments of Masius and 

 Yanlair upon the regeneration of parts of the spinal cord 

 in frogs, after loss of a small portion of its substance, show 

 that such reparation may take place and is attended with 

 restoration of function. The formation of cells precedes the 

 development of fibres, and voluntary motion appears in the 

 parts situated below the lesion, before sensation. 1 There are 

 no instances on record of such regeneration in the human 

 subject or in the warm-blooded animals. 



1 MASIUS ET YANLAIR, Recherches ezperimentoles sur la regeneration anato- 

 migue et fonctionnelle de la moelle epinere, Bruxelles, 1870. 



