PHYSIOLOGY : PRACTICUM VIII : PLATE XIX. 



VENTRAL ASPECT OF THE SHEEP'S BRAIN WITH THE EYES AT- 

 TACHED; X 1.3. 



From the specimens commonly examined the brain here represented differs as follows : 

 a. The EYES have been retained with OPTIC NERVES, b. The HYPOPHYSIS is 

 retained. c. Besides the TRIGEMINUS NERVES (marked 5), on the actual brains 

 there are more or less distinct signs of the roots of the other cranial nerves. 



The numbers indicate parts as follows : i, a small portion of the PALLIUM or fissured 

 region of the CERREBUM, projecting mesad of the OLFACTORY BULB. 2, the OL- 

 FACTORY CRUS, connecting the OLFACTORY TRACT with the BULB. 3, a slightly 

 depressed area just cephalad of the OPTIC TRACT. 4, a part which distinctly projects 

 over the tract. 5, The root of the TRIGEMINUS, the great sensory nerve of the face. 6, 

 a slight ridge, not always distinct, crossing the CRUS. 7, the TRAPEZIUM, concealed in 

 the human brain, by the caudal margin of the broad PONS. 8, the PYRAMID, less dis- 

 tinct than in man and not exhibiting a DECUSSATION. 



Some details are more fully shown in PI. XX. 



