FURNITURE, AND ITS USES. 215 



something to do in the case ;and when once set 

 a-going, we can form some idea of what keeps 

 it going; but after all, the real causes of the 

 continued motion of either the heart or the 

 lungs is a great mystery. 



You are probably aware that you can feel 

 the motion of the heart, if you will only lay 

 your hand on your left side, near the lower 

 ribs. This important organ not larger than a 

 man's fist, and strong and muscular is situated 

 slanting, or obliquely, as you see in the follow- 

 ing engraving. It is represented nearly in the 

 position in which my heart would appear, if 

 you could stand before me this moment, and 

 see it just as it now is, in full motion. I mean, 

 its position is just what it would then be. In 

 other respects, it would appear differently, 

 especially in its connections ; for the vessels 

 which go to it and come from it are here rep- 

 resented as cut off. 



