882 THE FEATURES OF DIFFERENT REGIONS. [Boon in. 



At the level of the sixth thoracic nerve (Fig. 96), in spite of 

 the white matter having very decidedly increased, the grey matter 

 has shrunk to such very small dimensions, that the total sectional 

 area of the cord has markedly diminished. 



At the level of the sixth cervical (Fig. 98) the grey matter 

 has again increased, reaching here as we have seen its second 

 maximum ; the white matter has also further increased, and that 

 indeed very considerably, so that the total area of the cord is 

 much greater than in any of the lower regions. 



Further details of the varying size of the white matter and of 

 the grey matter at different levels are also shewn in the series given 



cr.P 



.C.b. 



,x x asc.a.l. 

 x. 



desc.l. 



C8. 



