66 Motion of the Heart and Blood 



being exhausted by the action of the heart ; at the 

 same time the heart will become of a much paler 

 colour, even in its state of dilatation, than it was before ; 

 it is also smaller than at first, from wanting blood ; and 

 then it begins to beat more slowly, so that it seems at 

 length as if it were about to die. But the impediment 

 to the flow of blood being removed, instantly the colour 

 and the size of the heart are restored. 



If, on the contrary, the artery instead of the vein be 

 compressed or tied, you will observe the part between 

 the obstacle and the heart, and the heart itself, to become 

 inordinately distended, to assume a deep purple or even 

 livid colour, and at length to be so much oppressed 

 with blood that you will believe it about to be choked ; 

 but the obstacle removed, all things immediately return 

 to their pristine state the heart to its colour, size, 

 stroke, &c. 



Here then we have evidence of two kinds of death : 

 extinction from deficiency, and suffocation from excess. 

 Examples of both have now been set before you, and 

 you have had opportunity of viewing the truth contended 

 for with your own eyes in the heart. 



