. The electromotive properties of the skin of the common eel. HIPPOCAMPUS. 429 carried through the very limited region in which the reflected cortexappears on the surface, enclosed in a sheath of fascia dentata. Fig. 12. The under surface of the brain of Monodon monoceros (foetus at full term),as it is seen after removal of the hind brain, by a transverse section throughthe front of the pons Varolii. The drawing shows the extent to which thebrain is folded upon itself. , optic chiasm; , crus cerebri; F., fillet; , posteriortubercle of the corpora quadrigemina ; A, , anterio
. The electromotive properties of the skin of the common eel. HIPPOCAMPUS. 429 carried through the very limited region in which the reflected cortexappears on the surface, enclosed in a sheath of fascia dentata. Fig. 12. The under surface of the brain of Monodon monoceros (foetus at full term),as it is seen after removal of the hind brain, by a transverse section throughthe front of the pons Varolii. The drawing shows the extent to which thebrain is folded upon itself. , optic chiasm; , crus cerebri; F., fillet; , posteriortubercle of the corpora quadrigemina ; A, , anterior tubercle; U., uncus,completely separated from , gyrus uncinatus seu hippocampi ; ,splenium corporis callosi. Fig. 13. Ti-ansverse section of the hippocampus of a young seal (Phoca vitulina).Section 4b, carried through the region in which the hippocampus is bestdeveloped. The fascia dentata is seen lying at the bottom of the dentaryfissure. ,^A \^Q?, 23. /A ®^ 0 0 * OQ? ^^ «agaSf ^ •^Si- Phil. Trans. \^
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