bo 
rear 
The Structure of the Mammalian Csophagus. 
—— Epithelium 
U, muscularis 
MUCOSe 
Duct of gland 
Gland tubules 
showing mucous 
cells and demi- 
lunes 
Fic. 9. Transverse section of tunica mucosa and part of tela submucosa of 
cwsophagus of Procyon. >< 120. 
