Abstracted by F. W. Stewart, author. 

 Cornell University, Ithaca. 



On the origin of the ganglion cells of the nervus terminalis of the 



albino rat. 



Realizing that the ganglion cells of the nervus terminalis are 

 largely of the multipolar variety, suggestive of ganglion cells of 

 the sympathetic type, attempts have been made of late to asso- 

 ciate them developmentally with sources known or believed to 

 give rise to certain sympathetic ganglionic masses of the head. 

 These sources are, briefly, 1) the trigeminus nerve and, 2) the 

 sympathetic of the cervical region. The author had studied the 

 proliferations from the olfactory epithelium which he believes 

 give rise to the ganglion cells of the nervus terminalis and has 

 searched for evidence of contributions from other sources at dif- 

 ferent periods of embryonic life. Results have been entirely 

 negative in character, no such additional sources having been 

 encountered. 



