48 LABORATORY OUTLINE OF NEUROLOGY 



contained nerves and blood-vessels; also the arterial and venous 

 blood supply and the lymph spaces of the brain and meninges. 

 See Cunningham ('15), pp. 667-677 (meninges), pp. 900-908, 

 also pp. 969-976 (blood supply); Gray ('18), pp. 872-880 

 (Meninges); Morris ('14), pp. 903-924; Piersol ('16), pp. 730- 

 753 (blood supply), pp. 1197-1209 (meninges); Quain ('09), 

 Vol. Ill, Part 1, pp. 320-339; Sobotta ('11), pp. 188-192. 

 On the cerebro-spinal fluid, see Halliburton ('16); Weed ('14, 

 '17). 



vernrus 



^pons 

 ^trap. 



FIG. 7. The brain of the sheep seen from the right side. Natural size. 

 b.ol., olfactory bulb; f.lat., fissura lateralis (Sylvii); floe., flocculus; f.rh., 

 fissura rhinalis; g.f.i., gyrus frontalis inferior; g.orb., gyrus orbitalis; // to 

 XII, cranial nerves; lob.pir., lobus piriformis (gyrus hippocampi); n.ol.L, 

 nucleus olfactorius lateralis; pfl., paraflocculus; trap., corpus trapezoideum. 



46. Surface anatomy of the brain. With the intact human 

 brain and the sheep's brain before you, examine and compare 

 their external forms. Now compare both of these brains with 

 that of the dogfish. Identify in each brain the chief subdivi- 

 sions referred to in Section 38, so far as these are visible from 

 the surface. After the brain has been cut in two, as directed 

 in Section 58, some of these subdivisions will be more clearly 

 seen. In what parts of the brain do you find the greatest re- 

 semblances in the three species; where the greatest differences? 



Learn the names of the larger structures visible upon the 

 surface of the brain, omitting the minor subdivisions of the 



