116 



LECTURE IV. 



nencBj tlie so-called cornu Ammonis ; and finally, a posterior 

 horn, which, slightly curved, enters the posterior lobe, and 

 contains a small eminence, which has received several dozens 

 of names, those most in use being the little Ammon's horn, the 

 Hippocampus minor, and the Galcar avis {ergot de Morand 

 among the French.) 



On removing the hemispheres from above, the anterior and 

 posterior horns and the hippocampus minor, and their junction 

 with the descending cornu, as well as the choroid plexus, are 

 plainly discerned. In vertical lateral sections, the connexion 

 of the horns and the extension of the middle cornu can be 

 easily followed. 



I was compelled to enter into these details, because one of 

 the greatest anatomists of modern times, Richard Owen, has 

 maintained that the sole characteristics of the human brain are 

 to be found in the existence of a posterior lobe, of a posterior 

 cornu, and a hippocampus minor, and in spite of accumulated 



Fig. 37. Drawing of the brain of a Cliimpanzee, after Marshall ; descrip- 

 tion and preparation precisely the same as in the preceding figure. 



CO. 



