NERVUS TERMINALIS IN AN INFANT 359 



joins it at the nodal point A and the others more ventrally near 

 the main sphenopalatine artery and nerve (septal division). 



The fibers of this anastomosis of the nasopalatine nerve with 

 the n. terminalis are more compacted than the fibers in the n. 

 terminalis and no nerve cells were found in its course except 

 perhaps one marked by a dot in figure 2, well ventrally in its 

 course in this field. This seems well beyond the known terri- 

 tory of the nervus terminalis. These rami of the nasopalatine 

 nerve lie in a similar position to those of the n. terminahs deep 

 to the arteries and most other structures of the mucosa, so that 

 there is no reason for confusion with the fila olfactoria. In 

 fact, most of the details at nodal point A were made out in a 

 single section. There is but a single cell in the double ramus 

 of the n. terminalis crossing near nodal point A, but with the 

 most ventral of these there is an exchange of fibers (fig. 2). A 

 study of the various rami given off from the septal portion of 

 the nasopalatine in this region (fig. 2) reveals an intimate inter- 

 lacing of fibers with the n. terminalis. A further study of this 

 region by various methods is needed to make these points more 

 certain. 



It has been noted in study of the sections that there is a slight 

 tendency of the peripheral rami of the n. terminalis to converge 

 distally and rostrally (fig. 1) around a point of slight depression 

 which is probably the organon vomeronasal (Jacobson's 

 organ). This point in the behavior of the nervus terminalis is 

 in correspondence with the findings of others, viz., that there is 

 an intimate connection of the n. terminalis with Jacobson's 

 organ. The preparations were not well impregnated in some 

 parts of this region. 



We may summarize briefly by saying that the peripheral 

 nervus terminalis is so large in man that it may be said to be 

 hypertrophied as compared to the known development in other 

 mammals, without appreciably increasing its central root. In 

 addition to many cells in the ganglion terminale it contains 

 about fifteen hundred cells peripherally under the nasal mucosa. 

 Though disposed in three or fomr chief rami emerging from the 

 lamina cribrosa there is a vast network of interlacing bundles 



THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. 28, NO. 2 



