158 NEW YORK ZOOLOGICAL SOCIETY. 



Tlic l)l(ni(l vessels >1m\\ im ahnoiiiialil} except in those areas of 

 the anterior horns where the degenerated cells appear most fre- 

 qtient : here there seems to he pcrivascnlar gliomatosis of slight 

 degree. 



Lumbar Cord. — Alterations in the Inmhar cord do not differ 

 from those foinid in the cervical and dorsal levels. 



Coiichisioiis. — A descending degeneration with poliomyelitis is 

 disseminated throughout the cord, becoming more marked in the 

 lower levels where the posterior root ganglia are also involved, 

 causing degeneration of isolated fibers in the ascending tracts. 



It is a little difficult to reconcile the degenerations found in this 

 Cord without assuming some disease of the encephalon, and in 

 all probabilit}- this was i)resent. it is i)robable, however, that the 

 lesions that gave rise to the most marked symptoms were the 

 poliomvelitic changes. 



Case ]v. 



Macaciis iiciiiestriinis. — The animal exhibited the atrophies in a 

 moderate degree, and the disease was of rather recent onset. The 

 animal was Idlk-d by clilorofonn and the general post-mortem 

 examination show cm! notliing of note. Xo gross alterations were 

 evident in the brain or cord 



Microsco])ically, tlu- lesions ])resent throughout the cord con- 

 sisted of an atrtipliN and degeneration of the cells of the anterior 

 horn. particular]\- in the lower dorsal and lunil)ar regions, but 

 present also, though in lesser degree, in the cervical levels. 



Occasional degenerated fil)ers were found, scattered irregularly 

 throughout the ascending as well as descending tracts, l)ut no defi- 

 nite systematic degeneration was present. 



\'ascular alterations, chietl\- an acute e\udati\e arteritis, was 

 present in the anterior horns in a few jxitches, and elsewhere many 

 of tlie smaller vessels showed a chronic prf>liferative arteritis; the 

 larger vessels seem tf) l)e free from these changes. 



Coiichisioiis. — This case a])i)arentl\ re])resents one of poliomyel- 

 itis of rather recent origin associattd willi a cln'onic proliferative 

 arteritis of the smalK-r vessels of the cord. 



C.\SF, V. 



Cioldcn lUihodii ( Pdpio hahiiiii). — I his aniinal prt'sentid the 

 typical clinical manifestations of "cage ])aralysis."' its case was 

 a mildly ])rogressing one, extending over a period of two years, 

 before terminatinLr fatall\-. .\t times the animal suffered from 



