CENTRAL NERVOUS SYSTEM IN VERTEBRATE ANIMALS. 
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g.c.s. Ganglion cells of the substantia gelatinosa centralis. 
gn.ab. Ganglion of the nervus abducens. 
gn.mo. Ganglion of nervus motor oculi. 
gn.tf Ganglion of the trifacial. 
gn.tli. Ganglion of the thalam encephalon. 
gn.v. Ganglion of the vagus. 
hy. Hypoarium. 
in. Infundibulum. 
l.c. Lateral columns of the cord. 
l.c. 5. Lower column of the trifacial. 
l. op. Lobi optici. 
to. Medulla. 
m. f. Mauthner’s fibres. 
n. 1 . Olfactory nerve. 
n. 2. Optic nerve. 
n. 3. Motores oculorum. 
n. 4. Trochleares. 
n. 5. Trifacial. 
n. 6. Abducens. 
n. 7. Facial. 
n. 8. Acusticus. 
n. 9. Glossopharyngeal. 
n. 10 . Vagus. 
n. 11 . First spinal nerve. 
n.r. Nucleus rotundus. 
ol. Olfactory lobe. 
op.tr. Optic tract. 
p.c. Posterior commissure. 
pi. Pituitary body. 
pr.c.t. Processus e cerebello ad testes. 
p.m. Pia mater. 
r. c. lies ti form column. 
s. g.c. Substantia gelatinosa centralis. 
s.r. Fourth ventricle or sinus rhomboidalis. 
s. v. saccus vasculosus. 
t. Tectum lobi optici. 
t.c.cbl. Transverse commissure of the cerebellum. 
t.s. Torus semicircularis. 
t. v. Tuberosity of the vagus. 
u. c. 5. Upper column of the trifacial. 
v. c. Valvula cerebelli. 
