THE NERVOUS SYSTEM 



differ from the normal. The midbrain was diminished in size. The cor- 

 pora quadrigemina had fewer nerve cells and fibers than the normal. The 

 corpus striatum was normal on one side, but on the other lacked portions of 

 the putamen and the nucleus caudatus. The thalamic ganglia which are 

 well developed in a normal child were absolutely lacking except to a slight 

 extent in the hypothalamic nuclei where a few fibers coming from the striatum 

 were present. Of the cerebrum proper not the least trace remained, either 

 macroscopic or microscopic except for the connective tissue vascular frame- 

 work. 



FIG. 400. 



This child showed no physiological development from birth until death. 

 In the language of the authors, " It was astonishing how much less this child 

 could accomplish than the dog without a cerebrum." While the operated 

 dog showed the activities described above, the child remained quiet without 

 conscious control over its limbs and body. It did not grasp with the hands, 

 showed only a certain motility of the face, the lips were co-ordinated with 

 the tongue in sucking, but otherwise the restlessness and motility shown by the 



