456 



MESSRS. F. GOTCH AND V. HORSLEY 



CAT. 



From this it will be seen that with the minimal stimulus effects were obtained only 

 on exciting the posterior columns ; that the effect, due to excitation of the posterior 

 column on the same side as the nerve, was eight times as large as that due to excita 

 tion of the posterior column on the opposite side ; and that no effect was produced by 

 stimulation of either lateral column. With a stronger stimulus, it is seen that the 

 effect evoked from the posterior column of the same side was five times as large as that 

 obtained from the posterior of the opposite side, and further an effect was obtained 

 from the excitation of the lateral column on the same side as the nerve. 



Turning now to the Monkey, the results similarly grouped, are as follows : 



