(99) 



neur.p. 



Fig. 63. Cells of the spinal cord of the larva of Lampetra. 

 A „nH R We motor-cells with dendrites reaching to the opposite side; C, small cells with 

 ^p^SSno axon; «. axon; M/. Mailer's fibres; „*«,.>. neuropil at 

 P periphery of spinal cord. (After Tretjakoff.) 



