. The American journal of anatomy. Fig. 11. stomachs of: A, Lepus; B, Mus; C, Cricetus, after Toepfer; D, Fiber. upon the lesser curvature and replaced a considerable portion of itsglands. In Fiber (Fig. 11, D) and in a number of species of Arvicola thisspecialization has reached its highest degree, the stratified epitheliumextending over into the pyloric sac along the greater curvature, andreplacing to a large extent the pyloric glands and the glands of the lessercurvature in such a way that the fundus glands form an islet completely R. R. Bensley 139. snrroimded by a glandless mucous membran
. The American journal of anatomy. Fig. 11. stomachs of: A, Lepus; B, Mus; C, Cricetus, after Toepfer; D, Fiber. upon the lesser curvature and replaced a considerable portion of itsglands. In Fiber (Fig. 11, D) and in a number of species of Arvicola thisspecialization has reached its highest degree, the stratified epitheliumextending over into the pyloric sac along the greater curvature, andreplacing to a large extent the pyloric glands and the glands of the lessercurvature in such a way that the fundus glands form an islet completely R. R. Bensley 139. snrroimded by a glandless mucous membrane covered by a stratifiedsquamous epithelium. Around the margin of this islet of fundusglands is a narrow row of cardiac glands and a continuous Grenzfalte. Although the stomachs of the existing Ungulata have reached aconsiderable degree of complexity, anatomists have made out an inter-esting series of gradations culminating in thehighly complex ruminant stomach. The sim- A plest conditions are found in the Perisso-dactyla and in the Pigs among the former the conditions obtaining in theTapirs, Horses and Ehinoceroses (Fig. 12, A,B and C) are very similar. The stomach is ex-ternally undivided. In the mucous mem-brane four regions are to be distinguished, anoesophageal region lined by stratified squa-mous epithelium, a cardiac gland region ofsome width intervening between this and thefundus region and finally a pyloric gland re-gion. The published descriptions are notquite satisfactory as regards the Tapirs butthe evidence seems to
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