420 B. WACE CARLIER 



The nuclei hâve however again diminished somewhat in size to lo x 

 12,57 1^ and are more or less angular as in the resting condition. The lan- 

 thanin granules are also less numerous, though larger in size, they stain of 

 a pale blue colour and produce no clouding. The chromatin is often in con- 

 sidérable amount and blue in colour, Plate III, fig. 13. 



The nuclear membrane stains very pale blue and has little or no 

 chromatin adhèrent to it. The karyosomes average 1,73 i^ in length, 



The nucleoli are mostly rounded and large ones measure some 2,2 <j. in 

 diameter. Usually there is now only one nucleolus in each nucleus, but 

 tiny i^ucleolar particles are présent in addition in some cases. They are not 

 much bigger than the lanthanin granules, but are easily recognised by their 

 venons red colour. 



We may now say that the cells hâve completed the cycle of their changes 

 due to sécrétion. They appear to secrète for about 3 to 4 hours and then to 

 require about the same time to recuperate. However the Avorm is still in 

 the stomach not completely digested. Many cells are in active mitosis. 



Near the pyloric end the cells hâve not yet quite assumed a resting ap- 

 pearance, some nuclei being still cloudy to a slight extent and the cells not 

 quite crowded with zymogen granules, which are still somewhat large for 

 this région. Many cells are in process of nuclear division. 



10, u aud 12 hoiirs a/ter food. 



Thèse spécimens contain many parasites in the mucous membrane and 

 hâve therefore been eut out of the séries as untrustworthy. On the whole 

 however they indicate that the process of sécrétion has commenced anew, 

 begining about the tenth hour and steadily increasing in intensity, 



13 Hours af ter food. — Plate II, fig. 20. 



Lumen very wide and cells much shrunken being almost reduced to the 

 condition of thin strips lining the gland walls, they contain only a few scat- 

 tered zymogen granules situated near the free ends ; the granules vary consi- 

 derably in size, the médium and small sized ones predominating. The proto- 

 plasm is pale blue grey, easily seen and in small amount, 



The nuclei are shrivelled, measure 8,1 p. x '0,2 p. and hâve a pale ap- 

 pearance. The chromatin which is not abundant, is spread out and water- 

 logged in appearance staining of a watery blue colour. It is again situated 

 justunder the nuclear membrane to which it imparts athickened appearance. 



