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MESSRS. F. GOTCH AND V. HORSLEY 



be descending channels from at least the afferent sides of the spinal nerve centres, 

 even if there are not direct descending channels. In fact, GOLGI S work goes to show 

 that there are such direct paths, and this is extended by KOLLIKER. We commenced 

 the investigation of this point by the galvanometric method with an attempt to 



Fig. 25. 



ascertain whether any electrical change can be detected in the cord below the entry 

 of the stimulated afferent nerve, and have obtained positive results. Our plan was 

 to divide the cord in two places, as in Chapter VIII., and to connect the lower 

 lumbar end of the tract included between the sections with the galvanometer. (See 

 fijr. 25.) 



