NATURAL THEOLOGY. 



157 



CHAPTER X. 



OP THE VESSELS OF ANIMAL BODIES. 



[The figure represents the heart and great blood-vessels, and 

 may convey some idea of the circulation of the blood. We under- 

 stand A to be the great vein returning the blood from the body ; B 

 the right sinus or auricle. From this cavity of the heart, the blood 



14 



