i6o Journal of Comparative Neurology. 



{Fig. J, Plate £,) and the adjacent elements are intact. Al- 

 though this is perhaps not the place to discuss morphological 

 questions we may call attention to the fact that the radial ele- 

 ments with fusiform cellular dilatations {Fig. J a) are apparently 

 remnants of the spongioblast system, as may be gathered by a 

 comparison with lower vertebrates. 



THE MEDULLA. 



It is unfortunate for our purpose that the medulla of the 

 specimen was ruined during removal so that the important ques- 

 tion as to the subordinate centres along the motor columns and 

 particularly the condition of the vaso-motor centres remain un- 

 examined. 



THE CORD. 



For a similar reason the cervical cord is not in a condition 

 to report upon in detail. A number of sections from the cer- 

 vical region show that the ventral cornua of the gray matter is 

 very largely involved. The large ganglion cells are in some 

 cases intact, but generally are more or less affected by the fatty 

 degeneration. In some cases the entire cell is reduced to a 

 mere sac filled with granules of a honey yellow color. These 

 stages are illustrated in Ft^. 2, Plate E. 



No serious affection of the meninges or blood vessel is ob- 

 vious from the specimen. If there is any secondary degenera- 

 tion the only suggestion offered by our sections is a suffused 

 condition of the crossed pyramidal tract of the lateral column. 

 In the same region there is some gorgement of vessels and nu- 

 cleary proliferation. 



DESCRIPTION OF FIGURES. 



PLATE A. 



Lateral view of the right side of the brain drawn from the fresh specimen 

 corrected by reference to the model subsequently prepared. 



