492 



COMPARATIVE PHYSIOLOGY. 



brain were connected by bridges of fibers (commissures, etc.), 

 the pliysiological significance of the fact seems to have been 

 largely ignored, and even at. the present day is too little con- 



PiQ. 353.— Inner views of cerebral hemispheres of the rabbit, pig, and chimpanzee, 

 drawn as before, and placed in the same order (Huxley). Ol, olfactory lobe; C.c, 

 corpus callosum ; A.c, anterior commissure; H^ hippocampal sulcus; Un, unci- 

 nate; M, marginal; 0, callosal gyri; I.P, internal perpendicular; Ca, calcarine; 

 Coll, collateral sulci; F, fornix. 



sidered. 1. Cerebral fibers pass between the convolutions of 

 this part of the brain and the cerebellum ; between the former 



