552 RESPIRATORY SYSTEM OF THE DOG 
Dorsal border 
Apical lobe 
Cardiac lobe 
Fig. 492.—Lrerr Lune or Doe; Costan SURFACE, 
L. d., Diaphragmatic lobe. | Arrows indicate interlobar fissures. 
Intermediate Diaphragmatic lobe 
lobe 
Diaphragmatic lobe 
Cardiac lobe 
Cardiac lobe Apex of heart 
Fie. 493.—DrarpHrRaGMAtic SuRFACE oF LuNGs AND Heart oF Dog, 
1, Aorta; 2, wsophagus; 3, cesophageal nerve trunk; 4, posterior vena cava. 
