THE STOMACH. 



507 



In animals, the gastric glands are more complicated than in man, 

 frequently presenting dichotomous divisions and subdivisions of their 



FIG. 204. A, mucous gastric gland of a Dog, from the pylorus, with cylinder epithelium : 

 a, wide cavity of the gland ; 6, its caeca! appendages. 12, peptic gastric gland from the 

 middle of the stomach : a, common trunk of the gland ; b, its chief branches ; c, terminal 

 caeca. Magnified 60 diameters. C, a portion of the cceca, magnified 350 diameters, and 

 viewed longitudinally. 7), the same viewed in transverse section : a, membrana propria b, 

 large cells close to it; c, small epithelium round the cavity. 



are lined by rounded or oval cells (peptic-cells), and which run side by side to the base 

 of the mucous membrane. In these cells minute oil-globules are frequently observed. The 

 terminal tubules have a peculiar twisted appearance, which is dependent on numerous 

 lateral dilatations. In this part of the stomach no racemose glands exist, although they are 

 found in the lower part of the oesophagus. 



Between both these forms of " peptic gastric glands," (Magensaftdriisen) Professor Ko'lli- 

 ker observed, fasciculi of contractile fibre-cells, but he denies the existence of the spiral 

 fibre-cells investing the glands, as described by Ecker. 



The compound tubular glands with cylinder-epithelium occur in the pyloric zone, and resem- 

 ble the last-described variety, with the exception, that the tubules are larger and devoid of 

 the rounded finely granulated peptic cells. Neither simple glands, nor racemose glands, as 

 stated by Ecker, are here observable. 



These investigations of Professor Kolliker confirm the opinion of Bonders, as to the exis- 

 tence of two varieties of glands in the human stomach, viz.: the proper gastric glands 

 (called by Kolliker from their secretion "peptic" gastric glands) and the simple mucous 

 glands. These two distinct forms have been previously described in the stomach of Mam- 

 malia by Kolliker (Vid. 150, infra and " Mikroscopische Anatomic" II. 2, p. 240), but in Man 

 their existence has hitherto not been satisfactorily ascertained. DaCJ 



