THE STRUCTURE OF THE SPINAL CHORD. 
621 
PLATE XXIV. 
Fig. 11. A similar section of one side through the middle of the cervical enlargement, 
between the roots of the nerves ; I'l'l', nerve-tubes and blood-vessels passing 
out from the grey substance ; the bundles of nerves are seen breaking up 
amongst the clusters of nerve-vesicles ; magnified 20 diameters. 
Fig. 12. A section of the grey substance of one side, immediately below the first 
cervical nerves ; magnified 20 diameters, m. Nucleus of the spinal-acces- 
sory nerve. 
PLATE XXV. 
Fig. 13. A section of the white and grey substance of one side through the lower 
part of the medulla oblongata ; magnified 20 diameters. The spinal-acces- 
sory nerve, n, is seen entering the grey substance through the lateral 
column, and proceeding forwards to the vesicles of the anterior cornu. 
Fig. 15. A group of caudate vesicles, traversed by the fibrils of the anterior roots of 
the nerves. From a section of one of the anterior cornua in the lumbar 
enlargement of the chord ; prepared according to the second method, and 
magnified 220 diameters. 
4 L 
MDCCCLI. 
