190 ROBERT K. S. LIM 



portions of the digestive tract. This has already been noted 

 by Cade (5). 



(2) Finely Granular Oxyphil Leucocytes. — These 

 are sometimes massed together in groups : more generally 

 they are scattered throughout the mucosa. 



(3) Coarsely Granular Eosinophil Cells (PI. 8, 

 fig. 5, g). These are present in least numbers. They occur 

 mainly near the surface, and may be found between the cells 

 lining the duct of the gland as wpII as in the interglandular 

 tissue. The eosinophil granules or globules vary considerably 

 both in number and size, some being as much as 2-3 /x in 

 diameter. They stain with iron haematoxylin, which does not 

 colour the oxyphil granules of leucocytes ; they are thus not 

 unlike the cells of Paneth of the small intestine. 



All three types may be found in the interglandular tissue 

 of other animals, e.g. dog, pig, and rabbit. 



The interglandular tissue is more abundant at the cardiac 

 and pyloric ends of the stomach than in the middle of the 

 fundic region. Here the connecti\e tissue is more plentiful 

 immediately under the surface epithelium. 



The nmcosa rests on a thick condensation (membrane of 

 Zeissl, stratum compactum of Oppel (Text-fig. 1, a, sc)) of white 

 fibrous tissue, immediately underneath which lies the muscularis 

 mucosae. This membrane-like condensation is of interest 

 as it is not common to all animals, e. g. it is absent in man, 

 pig, and rabbit, but is present in cat and rat. Further, it is 

 non-elastic and separates the muscle-fibres Avithin the inter- 

 glandular tissue from the muscularis mucosae. It is per- 

 forated by vessels, and the plain muscle-fibres reach the mucosa 

 by the same communications. 



The Surface Epithelium. 



This epithelium includes the cells covering the surface and 

 those lining the ducts. These cells are essentially of one type.. 

 Those on the surface are columnar, becoming shorter and more 

 cubical as they are traced into the ducts. A corresponding 

 change may also be noted in the nucleus, which is elongated 



