ON THE MAMMALIAN NERVOUS SYSTEM. 



523 



(3.) After Previous Operations on Cord. 



Cat (227) division of left posterior roots '007 left 



(227) -009 right 



,, (230) division of right posterior column .... '008 left 



(230) .... -005 right 



(247) .... -012 right 



,, (251) division of both posterior columns .... "012 right 



(259) left hemisection '009 left 



(259) -008 right 



II. LUMBAE ROOTS. 

 7th Left Lumbar Posterior Root. 



Cat 



(341) 

 (348) 

 (362) 



026 



02 



02 



Cat (381) -018 



(382) -016 



Average - 02 Daniell. 



6th Lumbar Posterior Root. 

 Cat (383) -Oil 



6th Lumbar Anterior Root. 

 Cat (383) . -0045 



III. SPINAL CORD. 



ELECTRICAL Difference between Cross Section and Surface. Cord Divided and 

 Isolated at Position Indicated in Table. Contacts 1 centim. apart. 



(1.) Cord in Connection with Brain 



Cat 



(51) 1st lumbar .... -033 



(80) 12th dorsal .... -044 



(97) 12th dorsal .... -03 



(114) 2nd lumbar . . . '037 



(118) 4th lumbar .... '04 



(124) 3rd lumbar .... -046 



(126) 2nd lumbar ... -04 



(288) 13th dorsal .... '033 



(308) 1st lumbar .... "033 



(314) 12th dorsal .... '025 



(315) 13th dorsal .... -082 

 (317) 13th dorsal .... '032 

 (319) 12th dorsal .... '029 



(323) 13th dorsal .... -031 



(324) 13th dorsal. . . . -033 ' 

 Average '034 Daniel!. 



Monkey (41) 12th dorsal . . 

 (48) 12th dorsal . . 

 (52) 12th dorsal . . 

 (54) 12th dorsal . . 

 (234) 12th dorsal . 

 Average '025 Daniel!. 



018 

 024 

 029 

 027 

 025 



3 x 2 



