CHAP. II ] 



A NERVOUS SYSTEM. 



47 



the surface substance of the same extremity of the cell, 

 whence, after twisting round it and the straight process 

 several times, they pass away in different directions. 

 Occasionally L. Beale has seen the spiral process con- 

 tinuous with a dark-bordered fibre, though in such cases 

 it is not certain whether the straight process is or is not 

 continuous with a fibre of the same kind. J. Arnold has 

 also described cells of this type, and believes that the pro- 

 cesses are in connection with the nucleus of the cell, an 

 arrangement which has not been confirmed by other 

 observers. The fig- 

 ures given by Axel 

 Key and Retzius 

 agree closely with 

 those of Beale. 



7. But in the 

 ' sympathetic ' or 

 visceral ganglia of 

 man and other 

 higher vertebrates it 

 is most common to 

 find many simple 

 processes issuing 

 from large and very 

 granular ganglion 

 cells. Whether 

 each is directly con- 

 tinuous with a single 

 nerve fibre, after the FlG 16 ._ Multipolar G an g iion-ceiis from <s y m pa - 



fashion diaramma- thetic'of Man(MaxSchultze>. Highly magnified, u, 

 ,. ,, , . , . freed from capsule ; 6, enclosed within nucleated car- 

 tlCaliy depicted in su l e . The processes of both broken off. 



fig. 2, or whether 



some of the processes end differently, has not as yet been 



sufficiently ascertained. These large multipolar ganglion 



