HEPATITIS. 317 



In another instance, on examining the liver, which was 

 extremely high-coloured and in some parts tumid, there were 

 found throughout its substance collections of pus, from the 

 size of a pea to that of a hen's egg. These collections did 

 not form at regular distances, but had more or less of the 

 substance of the liver between them. 



Metastatic abscesses, which are the result of a constitutional 

 tendency to the production of pus in different parts of the 

 body, are frequently seen in the liver, but we shall allude to 

 this variety under the head Blood Diseases.. 



I have had occasion to examine livers both of the ox and 

 horse, in which the peritoneal surface was considerably thick- 

 ened, and consolidation of the substance of the gland had 

 occurred to some depth. In some instances, and not rare in 

 old cows, a circumscribed abscess has been discovered sur- 

 rounded by dense layers of plastic lymph, having undergone 

 a partial organization. Eoll particularly notices these collec- 

 tions of pus in c capsules with thick walls ' (dickwandigen 

 kapseln) which have resulted from an attack of hepatitis. 



In hot countries, inflammation of the liver is said some- 

 times to assume an epizootic form, especially about the end 

 of the summer. It is almost always connected with inflam- 

 mation of other abdominal organs; after death the liver is 

 found congested, of a greyish-red colour, and weighing from 

 40 to 50 pounds. In addition to ordinary symptoms, there 

 is irritation of the skin. Lessona describes such an epizootic 

 as having occurred in Italy, in 1827. 



There is no animal declared to be more frequently affected 

 with hepatitis than the dog, and probably because jaundice 

 is frequently observed in this animal. 



Symptoms* As Janosch correctly states, there is no disease 

 more difficult to recognise than hepatitis. It seldom occurs 

 as an acute affection, and mostly in a chronic form. Animals 



