In essence, the histological figure of the stomach of a hedgehog is not much different from that of man or white mouse.The nerves running into the stomach of a hedgehog comprize parasympathetic vagus nerve elements containing thick medullated sensory fibres and sympathetic elements, the parasympathetic fibres being somewhat thicker than the sympathetic fibres in the subserosa of the minor ventricular curvature. The two are able to run in separate groups for some time, but during their running through the outer muscle layer into the AUERBACH's plexus, they come into frequent ramification and mutual anastomosis, so that the histological distinction of the two becomes gradually blurred.A part of the incoming fibres come in contact with the nerve cells in the AUERBACH's plexus, to end there, but the majority together with the long processes from the nerve cells penetrate into the outer as well as the inner layers of the muscularis, distributing themselves in these layers, while some of them finally reach the submucosa and end in the MEISSNER's plexus formed therein. Fibres from this plexus spread out further into the mucous membrane.In the stomach of a hedgehog too, the terminal formation of the vegetative nerve fibres is always represented by the STOHR's terminalreticulum. Such a net-work is particularly typically well-developed in the muscular layers.The nerve cells found in the AUERBACH's plexus in the stomach of a hedgehog are lower in development than those in man, but are different from those in a white mouse in that the former frequently can yet be distinguished into the two types of DOGIEL's classification. DOGIEL's type I cells by far predominate over those of type II. The nerve cells in the MEISSNER's plexus, however, are small in number and are not beyond the infantile stage of development, so that it is impossible to classify them into the said two types.Stout medullated sensory fibers and their terminations have been proved to exist in the gastric wall of a hedgehog, though, may be, in a limited number. The terminations are formed only rarely in the muscularis, where they are predominantly found in the stomachs of man and white mice, but mostly in the submucosa, the muscularis mucosae and the propria mucosae in the case of hedgehogs. In the propria, sensory terminations are found only rarely in human and mouse stomachs, but in hedgehogs, these are rather numerous there. They even penetrate as far as into the connective tissue between the gastric glands and end close to the glands and the epithelium, a fact of considerable interest.There are five types of sensory terminations here. The 1st or the unbranched termination is composed of a sensory fibre, which ends in a sharp or a blunt point without ramifying, and is found in the submucosa and the propria mucosae, as is the case with the stomach of white mouse. The 2nd type or the simple branched termination is formed by a sensory nerve fibre branching out into two or three terminal rami which end mostly in sharp, but sometimes in blunt, points, and is found mostly in the submucosa and the propria mucosae in a hedgehog, and not so often in the inner layer of muscularis as in man and white mice.The 3rd type or the serpentine temination owes its name to the serpentine winding course of the component sensory fibre, which sometimes runs in simple vortical line in its course. This type is usually void of branches, but in rare cases one or two short lateral branches are seen. The 4th or the glomerular termination is formed by a sensory fibre arranged in a clew-like ending, found in a far simpler formation in a hedgehog stomach than in a human and in a very small number. The 5th or the special termination is perhaps strictly peculiar to hedgehogs and is formed by spherical terminal corpuscles shaped by fibril dissolution of a sensory fibre.