. The anatomy of the domestic animals. Veterinary anatomy. 850 THE NERVOUS SYSTEM OF THE DOG 9. The cruciate fissure is tlie deepest and most characteristic. It cuts deeply into the an- terior third of till' dorsD-iiicdial border and runs ahnost straiglit outward. It is continuous on the medial surface of tlie hemisphere with the caUoso-piarginal or splenial fissure. 10. The sulcus rhinalis is continued on the tentorial surface of the hemisphere tiy the occipito-temporal fissure. Anteriorly it is jirolonfied as the olfactory fissure, wliich is concealed by the olfactory Inilb and tract. 11. Th
. The anatomy of the domestic animals. Veterinary anatomy. 850 THE NERVOUS SYSTEM OF THE DOG 9. The cruciate fissure is tlie deepest and most characteristic. It cuts deeply into the an- terior third of till' dorsD-iiicdial border and runs ahnost straiglit outward. It is continuous on the medial surface of tlie hemisphere with the caUoso-piarginal or splenial fissure. 10. The sulcus rhinalis is continued on the tentorial surface of the hemisphere tiy the occipito-temporal fissure. Anteriorly it is jirolonfied as the olfactory fissure, wliich is concealed by the olfactory Inilb and tract. 11. The calloso-marginal fissure usually consists of two parts, splenial and jienual. The splenial fissure is parallel with the splenium and middle part of the corpus callosum on the medial surface of the hemisphere. It is continuous in front with the cruciate fissure and runs for- ward and outward across the tentorial surface to join the occipito-temporal or calcarine fissure. It gives ofT from pjg ggj Right < I i;i HI, VI iifmisphere its highest part the short accessory cruciate fissure. The OF Dog-Medial View genual fissufe is approximately parallel with the genu of ' " „ , ^lie corpus callostmi. J callosum; /, genu; / splen- rj,^^ suprasplenial fissure runs almost parallel mm of corpus callosum; a, genua fissure; ^^^y^ ^^^ posterior part of tlie calloso-inarsinal fissure on b. splemal fissure; c. suprasplemal fissure; jj^g ^^^^^ ^„j tentorial surfaces of tlie hemisphere. d, hippocampal fissure; e, sulcus corporis jg rpj^^ occipito-temporal or calcarine fissure is the callosi; /, postsplenial fissure; g. lesser continuation on the tentorial sm-face of the hemisphere of cruciate fissure; A, cruciate fissure. (After the splenial fissure Ellenberger, in Leisering's Atlas.) '^ J4 y^^ - hippocampal fissure forms the medial boundary of the piriform lobe. The olfactory bulb is large and is compressed laterally; its anterior end pro- jects beyond the frontal pole o
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