ON THE MAMMALIAN NERVOUS SYSTEM. 



379 



A very different relationship is, however, found to exist when the spinal cord of the 

 Monkey is investigated in a similar way. 



The spinal cord of a Macaque Monkey (232) was divided at the 10th dorsal vertebra 

 for excitation, and also at the 2nd lumbar, where having been freed from its nervous 



Fig. 12. 



I.C 

 2.C 



Macacus Rhesus 



Adult 9 



and other attachments, it was ligatured near its divided end, raised as in the preceding 

 experiment, and by means of cables connected with the ' leading off non-polarisable 

 electrodes at its ligatured end and at its surface (see fig. 12). 



The usual resting electrical difference was observed when the electrodes were 

 connected with the galvanometer, and was compensated. Each column was now 



3 c 2 



