. Journal of comparative neurology . a loose plexus and turn outward to end in the vomero-nasal formation. Several small filaments separate from the abovementioned plexus and unite into a single strand which coursescaudalward on the medial surface of the olfactory peduncle whereit apparently enters the brain substance in the region of the arcu-ate fissure. The nervus terminalis gradually decreases in size fromits connection with the vomeronasal nerves to its termination NERVUS TERMINALIS IN DOG AND CAT 149 in the brain cortex. This is due to three or four small filamentsthat leave the nerve at
. Journal of comparative neurology . a loose plexus and turn outward to end in the vomero-nasal formation. Several small filaments separate from the abovementioned plexus and unite into a single strand which coursescaudalward on the medial surface of the olfactory peduncle whereit apparently enters the brain substance in the region of the arcu-ate fissure. The nervus terminalis gradually decreases in size fromits connection with the vomeronasal nerves to its termination NERVUS TERMINALIS IN DOG AND CAT 149 in the brain cortex. This is due to three or four small filamentsthat leave the nerve at intervals and apparently enter the brainsubstance at different points along the course of the nerve. Upon microscopical examination of the vomeronasal nerves andthe nervus terminalis, which were dissected off and stained inmass, there can be seen a small spindle-shaped ganglion composedof about 200 cells causing an enlargement of the nerve shortlyafter its fibers have separated from the vomeronasal nerves. Formatio vorr)eTor)aia\\h. Cororn ar)t biasnoa Fig. 2 Represents the median section of the head of a cat with the frontallobe of the brain, the nasal septum and mandible removed, showing the courseand termination of the nervus terminalis and its connection with the vomero-nasal nerves. X li- Ganglion cells are scattered around the nerve and between itsfibers throughout the greater part of its course. Figure 3 repre-sents a camera lucida drawing of a part of the nervus terminalisproximal to the ganglion showing the distribution of these a careful examination of the septal portion of the vomero-nasal nerves within the nasal cavity a clump of nerve cells wasfound on each of two of its seven filaments. They lie at theside of the nerve and attached to it just dorsal to the vomero-nasal organ. These ganglion cells cannot be the cell bodies ofthe vomeronasal nerve filaments because it has long been known 150 ROLLO E. McCOTTER that the vomeronasal nerves are the axis cyhnde
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
