DISEASES OF THE LIVER. 247 



seen to be made up of broken-down cells and pigment 

 granules. 



On section, the liver presents a mottled appearance, the 

 centre of the lobules being a dark red colour, whilst the 

 peripheral parts are of a yellowish white. 



The veins are found to be much dilated and filled with 

 red cells. 



Not infrequently, blood extravasations and ruptures, 

 owing to the engorgement, are met with as the result 

 of repeated attacks of congestion and inflammation of the 

 liver. 



When these ruptures or extravasations are very extensive 

 and serious, they are manifested during life by collapse or 

 sudden pain. When less extensive there may be no diag- 

 nostic symptoms, beyond perhaps a little abdominal pain, 

 which may not attract our attention. 



Treatment. — In cases where the congestion is not due to 

 cardiac or pulmonary disease, and where the onset is sudden, 

 bleeding the animal in proportion to his size and condition 

 is recommended. 



In congestion of the liver associated with the specific 

 fevers, however, it is not advisable to abstract blood. 



The blood-letting should be followed up by the use of 

 moderate doses of aloes, and the subsequent administration 

 of salines, such as sulphate of soda, or sulphate of 

 magnesia. 



When the congestion is gradually developed and is 

 dependent on dietetic errors, or want of proper exercise, it 

 is of first importance to restrict the amount of food, and 

 attend to the sanitary conditions. In addition, salines, 

 such as those above recommended, may be given in the 

 drinking-water. 



When associated with some specific fever, the treatment 

 need not materially differ from that of the primary malady. 



