So 



MARY J. ROSS. 



FIG. 15. a 4 , gland showing the large clear cells, so characteristic of the earlier 

 stages. The cells at the upper part are in process of division, showing the union of 

 the duct, J., with the fundus, /, to form the neck ;/. 



FIG. 1 6. <? 5 , section showing the opening of the gland to the surface. 



