412 



CHANCKS IN CASTKK' CELLS. 



[Boon ii. 



n)i. In the loaded coll very little staining takes place, because the 

 amount of living staining cell-substance is small relatively to the 

 amount of material with which it is loaded and which does not 





FIG. 68. GASTRIC GLAND OF MAMMAL (Bat) DUHING ACTIVITY. (Langley.) 



c, the mouth of the glaml with its cylindrical cells. 



H, the neck, containing conspicuous ovoid cells, with their coarse protoplasmic 

 network. 



/, the body of the gland. The granules are seen in the central cells to be limited 

 to the inner portions of each cell, the round nucleus of which is conspicuous. 



stain readily. In the cell which after great activity has discharged 

 itself, the cell is smaller, but what remains is largely living cell- 

 substance, some of it new, and all staining readily. It would 

 appear also that during the activity of the cell some substances, 

 capable of being precipitated by alcohol, make their appearance, 

 and the presence of this material adds to the turbid and granular 

 aspect of the cell ; possibly also this material contributes to the 

 staining. A similar material seems to make its appearance in the 

 cells of albuminous glands. 



In the ovoid or border cells no very characteristic changes 

 make their appearance. During digestion they become larger, 

 more swollen as it were, and in consequence bulge out the 



