250 ELEMENTARY PHYSIOLOGY 



Pio. 79. — The Viscera of a Rabbit as seen ii'on simply opening the 

 Cavities of the Thorax and Abdomen without any further 

 Dissection. 

 A, cavity of the thorax, pleural cavity on either side ; S, diaphragm; 



C, ventricles of the heart ; D, auricles ; E, pulmonary artery ; F aorta; 



