520 MESSRS. F. GOTCH AND V. HORSLEY 



view we are firmly convinced that, when proper precautions are used to avoid the 

 disturbing influence of capricious factors, the present plan is one which gives as sure 

 indications as any other method which has been used in the carrying out of investi- 

 gations into the central nervous system, whilst by its mode of application it has the 

 merit of ensuring definite localisation in hitherto unexplored regions. The wide extent 

 of the field of research which the use of the method opens up is obvious. We have 

 only employed it for elucidating a few of the phenomena which are exhibited by the 

 functions of the brain and spinal cord; but the functions of various ganglia, the 

 relations of the sympathetic system, of the more central portions of the bulbo-spinal 

 system, and finally of the encephalic structures may, and undoubtedly will, be satis- 

 factorily approached in the future by its means. 



