. The brain as an organ of mind. Brain; Thought and thinking; Brain. Fig. Fig. 50.—Brain of Perch, iipper surface. (Owen after Cuvier.) a, Cerebellum; b, optic lobes; c, cerebral lobes ; i, olfactory ganglia; g, medulla ; p, n, r, s, t, cra- nial nerves. Fig. 51.—Brain of Perch, under surface. (Owen after Cuvier.) a, MeduUa; e, hypoaria ; /, pituitary body; n, optic nerves, decussating ; c, cerebral lobes ; i, olfac- tory ganglia; _p, q, r, s, t, cranial nerves. small, the eyes are at the surface. In the great majority of Fishes, however, these organs are large and attain a remarkable dev
. The brain as an organ of mind. Brain; Thought and thinking; Brain. Fig. Fig. 50.—Brain of Perch, iipper surface. (Owen after Cuvier.) a, Cerebellum; b, optic lobes; c, cerebral lobes ; i, olfactory ganglia; g, medulla ; p, n, r, s, t, cra- nial nerves. Fig. 51.—Brain of Perch, under surface. (Owen after Cuvier.) a, MeduUa; e, hypoaria ; /, pituitary body; n, optic nerves, decussating ; c, cerebral lobes ; i, olfac- tory ganglia; _p, q, r, s, t, cranial nerves. small, the eyes are at the surface. In the great majority of Fishes, however, these organs are large and attain a remarkable development. The optic lobes are usually the largest divisions of the brain in osseous fishes, as in the Perch (fig. 50), and they are commonly united by one or more transverse com- missures. Each of them generally contains a distinct cavity or ' ventricle,' and they often bear on their under surface two smaller ganglionic projections, known as. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bastian, H. Charlton. N. Y. , Appleton
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