84. ANAT03IICAL TECHNOLOGY. 



When tlie cat is dead, or, in experiment, quite asleep, place it 

 upon a tray. Roll some common cotton between the fingers into a 

 somewhat tirm conical plug or suppository about 5x1 cm. 



Dorsiduct the tail of the cat so as to expose the anus and open 

 it slightly. With the large forceps grasp the plug obliquely near 

 the tip and force it into the rectum. Then push it completely 

 beyond the constricted orifice with the forceps or a smooth, rounded 

 stick. If the cat has been alfected by diarrhea, it may be necessary 

 to insert a second plug. 



Let the buttocks of the cat project slightly beyond the edge of 

 the tray, over the sink or some other receptacle ; then jjress firmly 

 and steadily upon the abdomen just cephalad of the pubes. If the 

 cat is a female, the urine will usually flow out readily ; if it does 

 not appear, as is often the case with males, it is not likely to be 

 forced out during the subsequent operations. 



The urine of cats has a very ofi*ensive odor, and should not be 

 allowed to flow into the tray, or to reach the hair of the animal. 



Remove any escaped urine or feces with a bit of cotton, followed 

 by washing if necessary. 



If the left hypochondrium is prominent, or if there is other 

 evidence that the stomach is distended with food, let the mouth pro- 

 ject beyond the tray over a receptacle, and compress the whole 

 abdomen. K any matters escape from the stomach, the mouth 

 should be washed afterward with a stream of water. 



§ 200. Malodorous Parts. — On account of their contents, the 

 stomach and intestine become oflfensive very soon after death, espe- 

 cially if exposed to the air. 



In some cases it may not be necessary to open the abdomen 

 during the dissection of a fresh specimen ; decomposition will then 

 proceed less rapidly, and the efiects will be less obvious. 



If the abdomen is opened, these hollow viscera should be either 

 removed soon, or so treated as to lessen or prevent the production 

 of ofiensive odors. The large intestine especially may usually be 

 examined during the first or second day, so as to be removed. 



When any part of the alimentary canal is divided, the site of 

 \\\Q intended incision should be freed from its contents for at least 

 2 cm. ; then two ligatures should be applied at least 1 cm. apart, 

 and the cut made between them ; see Fig. 41. . 



When it is undesirable to remove the intestine, most of the 

 offensiveness may be avoided by expelling the contents. The con- 



