38 ON DEATH. 



.#. On the brain, for the heart continues to live after 

 animal life is destroyed. 



On the Influence of the Death of the Heart upon that 

 of the Lungs. 



Q. What constitutes the functions of the lungs? 



/?. Two processes; first, the mechanical one of expan- 

 sion by the aid of the muscles, and the chemical one of 

 changing the black blood to red. 



Q. In cases where the heart with black blood ceases to 

 operate, how are the lungs interrupted? 



#. There is no blood in the lungs in this case; the brain 

 is indirectly affected, because the heart, receiving no red 

 blood from the lungs, sends none to the brain. Without 

 this red blood the brain is unable to maintain the action of 

 the ribs and intercostal s, so the mechanical function of the 

 lung ceases. 



Q. How are the lungs affected, when the red blood 

 heart, is interrupted in its functions? 



#. The operation is an indirect one through the brain; 

 thus, the brain receives no red blood, consequently it 

 communicates no power to the intercostals and diaphragm; 

 and the lungs cease to live in consequence of a suspension 

 of their mechanical functions. 



On the Influence of the Death of the Heart upon that 

 of the Organs generally. 



Q. How is the death of the organs generally, induced by 

 that of the heart with red blood? 



.#. The organs of animal life die, because the heart sends 



