STRUCTURE OF THE MAMMALIAN GASTRIC GLANDS. 



385 



It is an interesting fact that among the other cells of the 

 neck of the fundus gland of the dog, cells may be found which 

 are in every respect similar to the cells of Stohr of the pyloric 

 glands, as described by Hamburger.^ These are characterised 

 by their fusiform shape and tiieir faintly staining protoplasm, 

 in which wavy fibrillse may be seen. The pointed end of the 

 cell which reaches the lumen stains intensely red both in the 

 Biondi mixture and in eosin. 



A point of some physiological interest is the varying length 

 of the gland neck in the stomachs of different dogs. It will be 

 seen from the following measurements that the differences in 

 the thickness of the mucous membrane are mainly due to 

 variations in the length of the body of the gland : 



Percentage of 

 wliole occupied 

 in zyraogenesis. 



.58-8 

 54-6 

 55-8 

 67-9 

 733 



The above measurements are taken from vertical sections 

 from the middle of the greater curvature, stained in the 

 indulin mixture, so that the junction of the body and neck of 

 the gland was sharply indicated by tiie cessation of the 

 indulinophilous cells. It is obvious that such differences in 

 the percentage of the whole gland engaged in ferment secretion 

 must be taken into consideration in estimating the relative 

 amounts of pepsin in the mucous membrane in different 

 periods of digestion. 



The pyloric glands of the dog are in all essential features 

 similar to those of the cat, the main difference being that the 

 ducts are much longer and rather cylindrical than funnel- 

 shaped, and the gland cells are much longer. The pyloric gland 

 cells contain a secretion which stains intensely in Bordeaux 

 R, in indulin, and in muchsematein, and are in every respect 

 similar to the chief cells of the neck of the fundus gland. 

 ' 'Arch. f. mik. Aiiat.,' Bd. xxxiv. 



