622 APPENDIX 



method is specially applicable to cases of drowning because the 

 face is downwards and water in the air passages readily runs out. 



Carbon Dioxide (COz) in Expired Air. Dip a tube below the 

 surface of a bottle containing lime water (CaO 2 H 2 ). Exhale 

 through the tube. The C0 2 in the expired air combines with th< 

 lime water in the bottle and forms an insoluble carbonate of lime 

 (CaC0 3 ) which makes the solution cloudy, later this will settle 

 as a precipitate (powdered chalk). 



When present in excess the CO2 makes the solution acid 

 the CaCO 3 redissolves. 



THE DIGESTIVE SYSTEM 



Dissection of the Digestive System in the Cat 



Exposure of the Viscera. Make an incision the length of th< 

 abdomen in the mid line. Separate the edges of the opening 

 as to get a good view of the abdominal contents. 



Peritoneum. This is a membrane lining the abdomen. It give 

 the abdominal wall a smooth glistening appearance and may 

 easily separated from the muscles forming the walh The mesen- 

 teries and the ligaments of the liver, the bladder and uterus 

 formed by duplicatures of the peritoneum. 



The Great Omentum. This is a double fold of peritoneum form- 

 ing a sac which is called the lesser peritoneal cavity. It is attache 

 to the posterior abdominal wall and the greater curvature of tl 

 stomach. Demonstrate the sac-like character of the omentum b] 

 tearing it open. Each wall of the sac is also composed of tw< 

 layers. Notice the distribution of fat through the omentum. 



Spleen. This is a deep red, usually single-lobed organ, situai 

 on the left of the stomach in the great omentum. 



Drawing. Make a drawing without disturbing anything, show- 

 ing position of liver, stomach, spleen, and great omentum covei 

 ing the coils of small intestine. 



Stomach. Turn the left lobe of the liver toward the head anc 

 the abdominal oesophagus will be seen emerging from the diaphi 

 and entering the cardiac end of the stomach. The stomach, as 

 whole, is pear-shaped and curved upon itself. The great curvati 

 is at the lower border of the stomach, and has the great omentui 

 attached to it, while the lesser curvature is the upper border. Th< 



