THE BODY.] 



PHYSIOLOGY. 



II 



the leg, a great cavity. This is something quite new 

 — there is nothing like it in the leg — a great cavity, quite 

 filled with something, but still a great cavity ; and if 

 you slit the rabbit right up the front of its trunk and 

 turn down or cut away the sides as has been done in 

 Fig. I, you will see that the whole trunk is hollow 

 from top to bottom, from the neck to the legs. 



If you look carefully you will see that the cavity is 

 divided into two by a cross partition (Fig. i, B) called 

 the diaphragm. The part below the diaphragm is 

 the larger of the two, and is called the abdomen or 

 belly ; in it you will see a large dark red mass, which is 

 the liver (Z). Near the liver is the smooth pale 

 stomach {M)^ and filHng up the rest of the abdomen 

 you will see the coils of the intestine or bowel, very 

 narrow in some parts ((9), very broad (P 0, broader 

 even than the stomach, in others. If you pull the bowels 

 on one side as you easily can do, you will find lying 

 underneath them two small brownish red lumps, one 

 on each side. These are the kidneys. 



In the smaller cavity above the diaphragm, called 

 the thorax or chest, you will see in the middle • 

 the heart ((7), and on each side of the heart two 

 pink bodies, which when you squeeze them feel 

 spongy. These are the two lungs (G), You will 

 notice that the heart and lungs do not fill up the 

 cavity of the chest nearly so much as the liver^ stomach, 

 bowels, &c. fill up the cavity of the belly. In fact, 



G, lungs, collapsed, and occupying only the back part of the chest ; H, lateral ^ 

 portions of pleural membranes ; /, cartilage at the end of sternum ; K^ por- 

 tion of the wall of body left between thorax and abdomen ; «, cut ends of the 

 ribs ; L, the liver, in this case lying mor to the left than the right of the 

 body ; M, the stomach ; iV, duodenum ; cy, small intestine ; /*, the caecum, 

 so largely developed in this and, other herbivorous animals ; Q, the large 

 intestine. 



