498 PHYSIOLOGICAL SERIES. 



place to a cauda equina. The main nerve-roots that form 



the cauda li<' in the specimen somewhat apart, and thus 

 display very clearly the terminal jiartof the cord dwindling 

 rapidly to a filament and giving off' on either side delicate 

 nerve-root- (!' diminishing si/e. At the anterior extremity 

 of the specimen the snhdural lymph-space is relatively small, 

 l>ut it gradually increases as the cord tapers and forms a 

 capacious cavity in which the proximal parts of the cauda 

 equina lie free. O.C.I 373. Hunt, / /.//*. 



D. 778. The hinder part of the spinal cord ot a young Lion (F> H.< 

 leo)j injected. The dura mater has been removed from the 

 dorsal surface, showing very clearly tin- division of the 

 dorsal roots of the spinal nerves into radiating rootlets 

 before their entrance into the cord. It should be noticed 

 that the shortening of the cord in relation to the vertebral 

 column (indicated by the backward passage of the nerve- 

 roots towards the intervertehral foramina) is not apparent 

 until about the middle of the crural swelling. The relations 

 of the dura mater and subdural space to the cord and 

 proximal part- of the cauda equina are very clear. 



0. C. 1374. J/nntrnnn. 



D. 779. The brain and spinal cord of a Coati-nmndi ( 



narica). The dura mater has been removed from the 

 dorsal surface. The cervical part of the cord, as in /><t.<//jn<.^ 

 is little, if at all, smaller than the hrachial swelling. The 

 crural swelling is very long and tapers gradually toward- 

 the tail, forming :1 eaiida equina in which the component- 

 are closely compacted together. 0. ('. \'.\l-\ it. 



D. 780. The isolated brain and spinal cord of a Badger (M,-l,s 

 meles). The cord is enveloped in its membranes. Pos- 

 teriorly it terminate- in a cauda equina. 0. C. 1374 A. 



UNGULATA. 



D. 781. "The lower part of the medulla spinalis of a Y\\\\i\ 

 (Cervus damd) with the dura mater turned of}' from one 

 side, to show the origins of the nerves arising from the 



