CENTRAL NERVOUS SYSTEM IN VERTEBRATE ANIMALS. 
77ft 
Fig. 11, PI. 60. Transverse section through the spinal cord immediately behind the 
fourth ventricle and through the posterior end of the ganglion of the 
vagus. 
Fig. 12, PI. 62. Transverse section through the spinal cord at the point where the 
dorsal root of the first spinal nerve emerges. 
Fig. 13, PI. 62. Transverse section through the spinal cord showing both dorsal and 
ventral roots of the first spinal nerve. 
Fig. 14, PI. 61. Transverse section through the spinal cord. 
All sections from figs. 3 to 14, inclusive, are magnified 43 diameters. 
Fig. 1ft, PI. 63. Cells from the lobi olfactorii. 
a and b. Cells from the central group. 
c. A cell from the outer edge between the coarse neuroglia and the outer 
layer. 
cl. Celldike swelling from the outer layer of fibres. 
e.f. Tripolar cells from the inner edge of the outer layer of fibres. X 945. 
Fig. 16, PI. 63. a and b. Smaller cells near the external surface of the cerebral lobes. 
c. Cells from the central portion, cl. A cell from the corona radiata. 
X 945. 
Fig. 17, PI. 63. Section through the superficial part of the cerebral lobes; showing 
the external layer of epithelium and the smaller cells. 
Fig. 18, PI. 64. Transverse section through the tectum lobi optici. X 170. 
a. An entering bundle of the crura lobi optici. 
1 . External layer of granular matter. 
2. Obliquely directed coarse fibres with fusiform cells. 
3. Striated layer. 
4. Layer of inner obliquely-directed fibres. 
5. Transverse fibres of the crura lobi optici. 
6. Layer of minute cells. 
7. Ependyma. 
b. The most internal cells of the sixth layer, with the connective tissue 
attached. 
c. Deeper cells of the same layer. 
d. Fusiform cells of the second layer, with neuroglia attached. 
Fig. 19, Pl. 64. Cells from the Fornix. X 945. 
a. Towards the proximal end. 
b. Towards the distal extremity. 
Fig. 20, Pi, 64. a. L ongitudinal section of the torus semicircularis of the Basse 
( La hr ax Lupus). X 170. 
b. The superficial cells magnified. X 945. 
c. The larger cells, resembling those in the spinal cord. 
cl. Sections of the crura lobi optici. 
MDCCCLXXVIII. 5 G 
