554 Veterinary Medicine. 



marked by petechise, punctuate or in considerable patches. The 

 cardiac capillaries are full of blood, with numerous piroplasmata. 



The peritoneum often contains a little reddish serosity, and a 

 slight gelatinoid exudation is sometimes found around the kidneys 

 or elsewhere in the abdomen. Petechise are frequent. 



The stomachs usually show petechiated spots on the mucous- 

 membranes, and more or less diffuse congestion. Sloughing of 

 the mucosa at such points is not uncommon, and even perforation 

 of the folds of the third and fourth stomachs. The Bureau of 

 Animal Industry and Lignieres both found these stomach lesions 

 very inconsiderable. The smaller pin-head erosions described by 

 Gamgee were identified by the Bureau of Animal Industry as bites 

 of the strongylus convolutus. The small intestines are usually 

 moderately congested. 



The caecum and colon show more congestion, becoming at times 

 of a deep red or almost black hue, and considerable extravasa- 

 tion of blood may take place. This is especially marked in the 

 rectum, which may be of a port wine hue, comparable to that 

 seen in rinderpest or haemorrhoidal anthrax. The faeces are 

 often dry and massed in balls in caecum and rectum, while if 

 diarrhoea has set in, the discharges may be colored with blood or 

 blood elements. Yet in the cases reported by the Bureau serious 

 lesions of the intestines were rather the exception, and some sub- 

 jects showed scarcely any lesion. 



The liver is usually enlarged, averaging three to five pounds 

 heavier than in a healthy ox of the same weight. In these en- 

 larged and congested cases it is of a deep yellowish brown color, 

 and often shows yellow spots on the darker ground. Micro- 

 scopically each acinus has a bright yellow centre from which yellow 

 radiating canals diverge to join the peripheral gall duct. In the 

 superficial or portal portion of the acinus, the hepatic cells are 

 granular from fatty change, yet the nucleus is usually still 

 recognizable. Toward the central zone it may have disappeared. 

 The further this has advanced, the softer, the more easily pitted 

 and the more friable the liver. The congestion of these radical 

 gall ducts with the dense colored bile, displays the structure of 

 the acini in a clear and beautiful way, which no injection can ac- 

 complish. When the affected tissue is teased out and placed under 

 the microscope the inspissated contents of the bile canaliculi may 



