THE NEWTS STOMACH DURING DIGESTION 435 



chromatin is arranged, frequently in one long zigzag mass that runs nearly 

 the whole length of the nucleus, or in isolated karyosomes. The lanthanin 

 is slate blue and not over abundant in most cases, occasionally it is violet 

 purple with a tendency to cloud. The nucleoli are small and not numerous. 

 The nuclei measure 18,90 x 7>9^ i^- At the inner end of the cell the 

 protoplasm stains blue with a tinge of grey in it, and exhibits many elon- 

 gated vacuoles. The cells measure in total length 52,6 i^ and the lymph 

 spaces between them are somewhat narrow. 



1 ^Iz Hoiirs aftcv food. 



At the cardiac end the mucigen cups are very pale blue, with flattened 

 or even slightly concave outer extremities; their inner ends are also flat- 

 tened or concave and within the cup no distinct granules can be made out. 

 The cups measure 10,9 X 9)5 {'■• Between the cups and the nuclei the 

 protoplasm exhibits wide meshes which are stained faintly pinkish but 

 contain no red staining granules. The nucleus is very wrinkled, shrivelled 

 and cloudy of a reddish lilac colour, through which little can be discerned. 

 In other cases the clouding is not so excessive and in thèse some diffusely 

 stained karyosomes may be distinguished enclosed in a thickened blue nu- 

 clear membrane. The nucleoli are small and few in number, but in a few 

 cases larger nucleoli are beginning to appear. The nuclei measure 14,99 

 X 6,59 |A on an average. The inner ends of the cells stain pinkish grey and 

 are only slightly vacuolated. They are narrow with wide lymph spaces be- 

 tween them. Total length of cells 36,66 p. or less. 



Though with methyl blue the mucigen granules are not individually 

 distinct, by the use of the méthylène blue patent B they may be readily 

 seen, they are abundant but minute. 



At the other end of the stomach the surface cells vary greatly, ap- 

 pearing less altered the nearer to the pylorus they are. The cups are short 

 and do not project greatly beyond the cément ring, internally they are either 

 slightly convex orilattened. They measure 1 1,27 x 12,46 1^ and are there- 

 fore rather broader than long. Between their inner ends and the nucleus, 

 the protoplasm is stained of a pale pinkish blue but contains no granules. 

 The nuclei measure 18,32 X 7, '^8 ^,. and do not appear wrinkled, but fill 

 the cells laterally. To the blue stained envelope a certain amount of chro- 

 matin is adhèrent beyond this there is little chromatin that présent being 

 of a palish blue colour. Lanthanin granules are not abundant except in a 



55 



