Fig. 171. Transverse 

 Section of the Spinal 

 Cord. 



a, anterior fissure ; /, poste- 

 rior fissure ; c, grey mat- 

 ter; pn, posterior nerve- 

 root ; ac, anterior cornu 

 or horn of grey matter ; 

 pc, posterior cornu. 



Fig. 172. Transverse Section of half the Spinal Cord. 

 Magnified 8 diameters. 



i, anterior fissure ; 2, posterior fissure ; 3, central canal ; 4, grey 

 matter ; , white matter ; 6, posterior cornu ; 7, anterior cornu ; 

 8, posterior nerve-root ; 9, anterior nerve-root. 



Fig. 170. The Spinal Cord and its Nerves (the Spinal Nerves), together 

 with the Sympathetic Chain on one side. 



v, pons Varolii, below which is the medulla oblongata ; c i to 8, the cervical nerves ; D i to 

 12, the dorsal nerves ; L i to 5, the lumbar nerves ; s i to 5, the sacral nerves ; 6, the 

 coccygeal nerve ; x , the terminal fibre of the cord ; a to x, the sympathetic chain, showing 

 the connection with the spinal nerves. 



