560 SUPPLEMENT ON ENTOZOA. 
quently affected by it than others; and that it is towards the 
malleoli that the affection takes place. This is difficult enough 
to explain on the hypothesis that these animals issue forth 
from the splanchnic cavities ; for it does not very clearly ap- 
pear why very nearly all of them should come out at the same 
place. The medina worm may yet become the subject of very 
interesting observations. 
