THE NEWTS STOMACH DURING DIGESTION 437 



3 Hours afterfood. 



The mucigen cups of the surface cells near the œsophageal end are of 

 fair length, they do not project greatly beyond the cernent rings though they 

 are convex externally ; internally they are straight or slightly concave. They 

 measure 15,07 X 1 1,05 1-^ and contain granules of fair size stained deep blue. 



Between the cups and nuclei there is little protoplasm the nuclei almost 

 touching the cups and red granules are absent, though the grey staining 

 protoplasm has somewhat of a red tint. The rather large nuclei are not 

 wrinkled, but surrounded by a deep blue purple coloured nuclear membrane 

 to the inner surface of which quantities of minute karyosomes adhère, giving 

 it a scalloped appearance. VVithin the nuclear envelope the chromatin ap- 

 pears fairly abundant and is arranged in spread out deep purplish red kary- 

 osomes of irregular shape. The lanthanin granules are numerous and large 

 though not crowded and stain of a deep purple slate colour. 



The small nucleoli are inconspicuous and lie in spaces of some size 

 free from lanthanin. The nuclei measure 17,99 X 9,35 i-^. The inner extre- 

 mities of the cells are decidedly vacuolated and pale yellowish grey in 

 colour; they appear broad with the lymph spaces almost obliterated. In total 

 length the cells measure 50 [,. 



Near the pyloric end the cells hâve much the same appearance as above 

 except that the mucigen cups are shorter and wider. 



4 Hours aftev food. 



At the upper end of the stomach the surface cells vary a good deal, the 

 mucigen cups are large, but do not project greatly beyond the cernent net; 

 they are convex at their outer and concave at their inner extremities and 

 stain of a deep sky blue, granules of mucigen of considérable size being vi- 

 sible in them. They measure 14,86 X 11,24 [j.. The nuclei extend almost 

 up to the cups leaving only a very small amount of protoplasm between 

 them in which no red staining granules are visible. The nuclei measure 

 20,15 X 8,5 i'- and hâve dark blue membranes to which some chromatin is 

 adhèrent in small scattered karyosomes. Within the envelope the chro- 

 matin does not appear to be abundant and is arranged mostly in small 

 rounded or irregular karyosomes of a deep French blue colour. The lan- 

 thanin is abundant but can hardly be said to cloud the nuclei except hère 

 and there, it stains blue with a deep grey tinge. The nucleoli are small. The 



