XII.] 



THE CORPORA STRIATA, 



371) 



and the boundary between them becomes somewhat 

 obscure, so that the sharp distinction which exists 

 in the embryo between the thalamencephalon and 

 cerebral hemispheres becomes lost. 



TRANSVERSE SECTION THROUGH THE BRAIN OF A RABBIT 

 FIVE CENTIMETRES. (After Mihalkovics.) 



OF 



The section passes through nearly the posterior border of the 

 septum lucidum, immediately in front of the foramen of Monro. 



hms. cerebral hemispheres ; cal. corpus callosum ; amm. cornu 

 ammonis (hippocampus major) ; cms. superior commissure 

 of the cornua ammonis ; spt. septum lucidum ;/r#2. anterior 

 pillars of the fornix ; cma. anterior commissure ; trm. lamina 

 terminalis ; sir. corpus striatum ; Itf. nucleus lenticularis 

 of corpus striatum ; vtr 1. lateral ventricle ; vtr 3. third 

 ventricle ; ipl. slit between cerebral hemispheres. 



