THE NEWTS STOMACH DURING DIGESTION 443 



within the envelope the chromatin is blue in colour and by no means abun- 

 dant. The small deep-dusky blue lanthanin granules are numerous and 

 tend to cloud. The nucleoli may be large or small, some are being ex- 

 truded. The inner ends of the cells are grey with a délicate pink tinge and 

 the lymph spaces between them are fairly wide. 



The cells over the pyloric extremity are similar to thèse at the cardiac 

 end but the mucigen cup is less grey, being rather dusky blue in colour. 

 Some nuclei are cloudy, others clear looking and the lanthanin varies in 

 colour froni blue to purple and lilac. 



15 Hours afterfood. 



In thé mucigen cups of the cardiac end are large granules staining pale 

 blue, otherwise they are much the same as at the previous hour. The nuclei 

 appear small and wrinkled, with some almost colourless protoplasm devoid 

 of granules between them and the lower ends of the cups. The nuclear en- 

 velopes are blue and rather thick with very little blue staining chromatin 

 within them. The lanthanin granules are small and not very numerous, 

 pale blue grey in colour. The lower ends cf the cells are grey, with slight 

 vacuolation. 



Near the pj'loric end the mucigen cups are fairly large, slightly convex 

 externally with numerous large mucigen granules of a dusky blue; internally 

 the cups are slightly concave. The nuclei are large, with well marked deep 

 blue walls to which some chromatin is adhèrent, within the nucleus the ka- 

 ryosomes are small and rounded and widely separated, they stain deep blue. 

 The dark lilac lanthanin granules are large and numerous, but produce 

 no clouding; the nucleoli are numerous and rather large, some are being 

 expelled. Between the cups and the nuclei there is a little pale grey proto- 

 plasm without granules, the inner ends of the cells are also grey with a 

 pinkish hue. 



At the pylorus the protoplasm of the surface cells, both between the 

 cups and nuclei and at the attached ends, is decidedly pink in tint but con- 

 tains no granules. The nuclei are only slightly wrinkled with blue chroma- 

 tin and red lilac lanthanin in abundance. The nucleoli are large, numerous 

 and in process of expulsion. The mucigen cups are large, blue coloured and 

 somewhat bulging externally, straight or convex internally. The distance 

 between the cups and the nuclei is considérable in some cases but contains 

 no granules and the lymph spaces between the cells are of fair size. 



56 



