Proc. Roy. Soc. Edin., Vol. XVI, Plate ill. 
Fig. 2.— Vertical section through the mucous membrane of the “cardiac 
division. The two kinds of gland cells are both present, x 60. 
Fig. 1. — Point of junction between gland tube, with double layer of epithelium 
{a) and duct with single layer (6). Plate II. fig. 2, more highly magni- 
fied. x 60 
