185 



suralis whose axone is disposed in the same way as those in the pre- 

 ceding figures. An additional point of interest is that this axone bears 

 a branched collateral (c). All of these cells present the very sinuous, 



Fig. 1. Transverse section through the caudal part of the nucleus commissuralis 

 in Lampreta. GOLGI method, ax axones. Magn. about 115 diam. 



Fig. 2. Dorsal part of a transverse section from the same series as Fig. 1 and 

 540 microns cephalad from it. c.c. central canal. Magn. about 100 diam. 



richly branched and highly moniliform dendrites characteristic of the 

 cells of the visceral sensory column in Lampetra. In Fig. 4 the same 

 thing is seen but here the "lobus vagi" is smaller and the neurones 



