In the cat snout, the epithelium is very tall, and the papilla formation of the propria is well developed, so that the nerves are also in very good development therein and the submucosal and the proprial plexus are strongly formed. The nerve elements consist of numerous sensory myelinated fibres and a small number of vegetative unmyelinated fibres.In the submucosa of the snout and the vestibulum nasi adjoining it, there are many blood vessels and frequent arterio-venous anastomosis is observed. The perivascular plexus is particularly well developed around the arteries.The vegetatative fibres in the cat snout too form the STOHR's terminal reticula as their endings, while the sensory fibres terminate in free endings sub- or intraepithelially.The subepithelial sensory terminations are usually of the branched type, and a part of their terminal branches pass over into intraepithelial fibres. The quantity of intraepithelial fibres in the cat snout is probably the largest in the animal kingdom. Thus, such fibres are found in the inter-papillary epithelial cristae without exception. These form branched terminations, of which the terminal fibres run peculiar circular courses and end sharply. In very many cases these intraepithelial fibres come from thick fibres. Next, we find numerous fibres emerging from the tops of the papillae into the epithelium, to end in its superficial layer. These also usually form branched terminations, but some end without branching. The courses of their terminal fibres are a little winding and they end in the upper layer of the epithelium in sharp points or sometimes in small knobs. No end-bulbs, such as found subepithelially in the snouts of pigs and dogs, were found in the feline snout.The arterio-venous anastomoses found in the snout and in the foremost part of the vestibulum nasi of cat is very rich in nerve fibres. Beside the vegetative terminal reticulum, sensory branched terminations are found as well, the terminal branches of which sometimes penetrate as far as into their special cell layer to end in sharp points there.In the feline snout and the foremost part of the vestibulum, specific branched sensory terminations are found in the perichondrium in a rather large quantity. These terminations are formed by considerably thick myelinated fibres and their terminal branches generally run irregular courses, but in some instances, the arrangement shows the general appearance of arborized formation. The branches often undergo marked change in size in their courses. Similar sensory terminations are found also around the cartilages in the cavum nasi, but here they are much simpler in structure.Upon reaching the vestibulum _nasi from the snout, the propria becomes much thinner, the papillae lose much in development and the epithelium becomes lower. Consequently, the nerve fibres, especially, the sensory fibres also are much reduced in number. In some places of the vestibule, however, the propria and the epithelium are thick enough, and in such places, the nerve fibres also are rather richly provided.The number of sensory fibres and their terminations in the vestibulum nasi, however, is much larger in cat than in man. The terminations are formed sub- or intraepithelially, in branched or unbranched type, here too. In size, they are however much smaller than in the snout. No corpuscular terminations as found in human nose have ever been found in cat, as in dog.In the pars respiratoria of the cavum nasi of cat, the distribution of sensory fibres is much poorer, though it is much richer than in man. Their number diminishes as we go back from the anterior to the posterior part of the pars respiratoria. Here also, the sensory fibres end in unbranched or branched terminations subepithelially or intraepithelially. The branched terminations, however, are extremely simple in construction, and the intraepithelial fibres, in particular, are of unbranched type in the largest majority.