_a_, Olfactory bulb; _a′_, _a″_, external and internal olfactory
tracts; _b_, optic nerve; _c_, oculomotor nerve; _d_, trochlear
nerve; _e_, trigeminus; _f_, abducens; _g_, facial; _h_, auditory;
_i_, glosso-pharyngeal; _k_, vagus; _l_, spinal accessory; _m_,
hypoglossal; _2_, trigonum olfactorium; _3_, anterior perforated
substance; _4_, tuber cinereum and infundibulum; _4′_, mammillary
body; _5_, pyriform lobe; _6_, temporal lobe; _7_, parietal lobe;
_8_, frontal lobe; _9_, pons; _10_, medulla oblongata; _11_,
cerebellum; _12_, cerebral peduncle; _13_, occipital lobe.
(Ellenberger-Baum, Anat. d. Hundes.)
]
[Illustration: