502 DESCRIPTION OF THE MUSEUM. 



(n 12), found in the human liver, but happily 

 very rare. 



The manner in which these worms are intro- 

 duced and propagated in the brain, liver, etc., is 

 a problem that has long attracted the attention 

 of naturalists, but which is not yet resolved. The 

 examination and comparison of many species 

 may perhaps throw some light upon the subject. 



