14 



OLOF LARSELL 



courtesy of the Chicago Veterinary College. This was fixed in 

 10 per cent formalin and decalcified in nitric acid. 



A number of dissections of pig, rabbit, and sheep embryos 

 were made. Most of these were treated according to the method 

 given by Prentiss ('15). 



Opportunity to examine twelve human brains was obtained 

 through the courtesy of Prof. S. W. Ranson. It was attempted 

 to ascertain if the relations of the fibers of the nervus terminalis 

 to the cerebral blood-vessels is the same in the human as in the 

 cat, the mule, and the ox. The nerve was identified in five of 

 the brains, but no definite light was obtained on the point in 

 question. 



ABBREVIATIONS 



ant.cer.art., anterior cerebral artery 



art.w., arterial wall 



ax., axone 



ax.cyl., axis cylinder 



bi.c, bipolar cell 



bl.v., blood-vessel 



bu.olf., bulbus olfactorius 



bu.olf.ac, accessory olfactory bulb 



cen., centripetally 



cer.hem., cerebral hemisphere 



CO. ant., anterior commissure 



c.pr., central process 



cri.pl., cribriform plate 



d.n.ter., dorsal main bundle of nervus 



terminalis in nasal septum 

 fi., nerve fiber 

 gn., main ganglion ('ganglion termi- 



nale') of nervus terminalis 

 gn' ., accessory ganglia 

 in.pl., intracranial plexus of nervus 



terminalis 

 lam.ter., lamina terminalis 

 m.n.ter., median main bundle of nervus 



terminalis in nasal septum 

 my., myelinated nerve fiber 

 my.sh., myelin sheath 

 n.eth.ant., anterior ethmoidal nerve 

 n.op., optic nerve 



no.R., node of Ranvier 



n.ter., nervus terminalis 



n.vom., nervus vomeronasalis 



olf.fi., olfactory fibers 



op.chi., optic chiasma 



or.vom., vomeronasal organ 



per., peripherally 



p. pi., peripheral (septal) plexus of ner- 

 vus terminalis 



p.pr., peripheral process 



pr., nerve process 



R., fiber of Remak 



r^,r'^,r',r*, central roots of nervus ter- 

 minalis 



ram., ramus 



r.dor., ramus of dorsal main bundle of 

 nervus terminalis 



resp.epith., respiratory epithelium 



r.med., ramus of middle main bundle 

 of nervus terminalis 



r.ven., ramus of ventral main bundle of 

 nervus terminalis 



sp., spiral 



un.c, unipolar cell 



unmy., unmyelinated nerve fiber 



v.n.ter., ventral main bundle of nervus 

 terminalis 



