154 



OF FOOD, AND THE DIGESTIVE PROCESS. 



spots differ from the lenticular glands, in being destitute of a limiting mem- 

 brane. 1 The interior surface of the stomach, thrown by contraction when 



FIG. 69. 



FIG. 71. 



FIG. 70. 



h 



FIG. 69. Transverse section passing through a cluster of gastric cteca, separated and surrounded by 

 fibrous tissues ; a, a, orifices of divided capillaries. 



FIG. 70. Mucous gastric gland, with cylinder epithelium ; a, wide trunk ; b, b, its eiecal appendages. 



FIG. 71. Transverse section through the fundusof the stomach in a child: a, a, columnar epithelium : 

 I, b, peptic gland-tubes ; c, c, muscularis mucoste,, about l-250th of an inch in thickness phi. 11 y composed 

 of longitudinal fibres ; d, d, submucous tissue ; e, circular muscular layer; g, peritoneum ; A, ganglia of 

 Auerbach. 



the viscus is empty into irregular folds or rugse (Fig, 72, A), presents through- 

 out the greater part of its extent, and especially near the Pylorus, small 

 vascular processes or prolongations of the mucous membrane (B), 2 resembling 

 the villi of the small intestine, of which they must be considered as the rudi- 

 mentary condition, but differing essentially from them in the circumstance 

 that they contain no lacteal vessels. The li/mphatics of the stomach are stated 

 by Teichmann, 8 to form two layers, a superficial and close network surround- 



1 See Klein, Op. oil., p. 548. 



2 This fact was first brought into prominent notice by Dr. TSTcill, in his Memoir, On 

 the Structure of the Mucous Membrane of the Human Stomach, in the Anicr. Jour, 

 of Mi-d. Sci., January, 1851. 



3 Das Saugacler System, 1801, p. 76. 



