84 /oiinial of Comparative Neurology and Psycliology. 



only by a study of the central oriuiii of tlie fibers, seems to me eertaiii- 

 ly an error. To know where a nerve iroes, and what it does, is abso- 

 lutely necessary in all attempts to establish its homologies, and is hence 

 equally as important as to know where it comes from, what character 

 of fibers it contains, or liow it is developed. Its ])eripheral distribu- 

 tion should, in fact, be, first of all, definitely known." By way of 

 practical illustration of this contention, Mr. Allis has here for another 

 type carried the study of peripheral distribution as far as the most re- 

 fined dissection methods can do and in some of the cases (such as the 

 relations of the post-vagal nerves) whose interpretation has still bafiled 

 him the subsequent microscopical study of these nerves has already 

 solved the problem. c. .1. 11. 



