THE NEWTS STOMACH DURING DIGESTION 441 



Near the lower end of the stomach the mucigen cups are large, well fil- 

 led with dusky blue granules and their flattened external ends do not pro- 

 ject much beyond the cernent net. Inner ends of cups slightly concave or 

 flat. The protoplasm below the cups is narrow and exhibits the same pink 

 tint as at the cardiac end, which is visible also in the lower part of the cups. 

 The nuclei fill the cells laterally and are surrounded by deep blue envelopes 

 with very tiny karyosomes adhèrent to their inner surfaces, within this the 

 chromatin is arranged in small spiny blue masses. The lanthanin does not 

 cloud, though it is abundant and blue or blue grey in colour. Nucleoli are 

 large or of moderate size and frequently exhibit extrusion. The cells at their 

 inner ends are blue with fine vacuolations and the lymph spaces of mode- 

 rate width. 



10 Hours afterfood. 



The mucigen cups at the œsophageal end of the stomach are very pale 

 and long; they are filled with mucigen granules, their outer extremities are 

 flattened and do not project much, internally they are straight or slightly 

 convex. Between thèse and the nuclei the protoplasm is broad and pale blue 

 but no red granules are visible in it. The nuclei fill the cells laterally, 

 their envelopes are paler than usual and thin, there being very little chro- 

 matin adhering to them, within the envelope the chromatin may or may not 

 be abundant, it is arranged in streaks and dashes or irregularly and stains 

 of a médium blue with hère and there a tinge of red in it. The pale blue 

 lanthanin granules may be numerous or only sparsely scattered ; the nu- 

 cleoli are large, but extrusion appears rare. The nuclei measure 21,36 x 

 7,49 |ji. The inner ends of the cells are pale blue with few vacuoles and 

 fairly wide lymph spaces. 



Towards the pyloric end the mucigen cups are somewhat long but their 

 flattened outer ends do not project greatly; their inner ends are flat or 

 concave. They are filled with granules of a dusky blue colour, but there is 

 no crowding. The protoplasm between the cups and the nuclei is often abun- 

 dant but contains no red staining granules. The nuclei hâve blue walls with 

 little chromatin adhering to them ; within the envelope the karyosomes are 

 often large and irregular and joined by threads, some are in streaks. In co- 

 lour they are deep blue with a reddish tinge. Médium sized or large lantha- 

 nin granules are présent though not very numerous, they stain pale blue as 

 a rule. The nucleoli are rather large and situated in considérable lanthanin 



