268 



ENDOCRINE GLANDS 



I have said that the central ganglionic fibre ended: 

 en block, in a ganglion of one of the groups of ganglia, and 

 from this ganglion arises a second relay. In realit\ 



a 



central ganglionic fibre may, by the collaterals which 

 it gives off, give birth to ganglion-splanchnic fibres, in 

 several ganglia. In this way it may give birth to ganglion- 

 splanchnic fibres in successive ganglia of various groups of 



