THE NEWTS STOMACH DURING DIGESTION 439 



slightly wrinkled, with dark blue envelopes to which some isolated karyo- 

 somes are adhèrent internally. The chromatin is not abundant, somewhat 

 spread out, and of a purplish colour. The lanthanin granules are very fine 

 of a purplish grey colour and tend to cloud; the nucleoli which are some- 

 what large are freequently being extruded. The nuclei measure 19,5 X 

 5,99 \j-. The lower ends of the cells are pale blue with considérable vacuola- 

 tion and narrow lymph spaces. Total length of cells 33,76 |x. 



At the pylorus the surface cells hâve much the same characters as above 

 but présent a much redder stained chromatin, whilst their inner ends are 

 reddish grey with only a few vacuoles. 



6 Hoiirs after food. 



At the cardiac end the mucigen cups are deep blue in colour, small in 

 size and project but little beyond the cément net. At their inner ends the 

 cups are somewhat indistinct but apparently slightly convex. They measure 

 7,93 X 10,81 a. Below the cup the pinkish grey protoplasm is fairly abun- 

 dant, but devoid of red granules. The nuclei are large with deep blue en- 

 velopes to the inner surfaces of which some chromatin is adhèrent. Within 

 the nucleus the chromatin is more abundant, and blue without any red tinge 

 except in the case of a few large angular karyosomes that take on a purplish 

 stain. The lanthanin granules are large, blue grey in colour but not very 

 numerous. The nucleoli which are somewhat large and more numerous than 

 before lie in large lanthanin free spaces, while some are being extruded. 

 The nuclei measure 20,6 X 7,35 1^. The inner ends of the cells are grey 

 or pinkish grey with few vacuoles and narrow l3anph spaces. Total length 

 of cells 42,0 t^. 



8 Hoitrs after food. 



Near the pyloric end the cells vary a good deal, but on the whole the 

 mucigen cups are neither large nor projecting but somewhat fiattened 

 externally. The inner ends of the cups are slightly concave or straight or 

 even slightly convex. The cups measure ii.qX 11.95 1^ and stain dusky 

 blue. The protoplasm between the cups and the nuclei is often well deve- 

 loped with a pinkish tint and some red granules are présent in it. Most 

 cells however hâve no granules in this région and the protoplasm stains pale 

 fawn colour. The nuclei though sometimes slightly wrinkled fiU the cells, the 

 nuclear envelopes are dark blue and to their inner surtaces some dark blue 



