384 



MESSES. F. GOTCH AND V. HORSLEY 



That is to say, whether the nerve impulses proceed down the cord from an upper 

 excited to a lower observed area, or up from a lower excited to an upper observed area, 

 the anterior column fibres give no effects or only small ones, the lateral give marked 

 effects, but the posterior give still more pronounced effects. 



Fig. 14 



If we turn now to experiments upon the Monkey s cord, the same contrast with the 

 results in the Cat appears as was described before. Thus in a Macaque Monkey 

 (271) the cord was exposed and divided at the 8th dorsal vertebra and was then 

 freed from its attachments, ligatured on the peripheral side of the section and raised 



