SPLENIC OR PERIODIC FEYER OF CATTLE. 143 



jxranalar lympli, near the surface, extending in one instance to half an 

 inch in depth. There was also marked evidence of fatty degeneration. 



The gall bladder was the seat of extensive, ramified redness on its 

 inner surface. 



The spleen, of a dark purplish tint, weighed six and a half pounds. 

 Wherever an incision was made, its softened pulp exuded without pres- 

 sure. 



The kidneys, paler than usual in this disease, weighed three and one- 

 quarter pounds. They were free from ecchymoses. 



The urinary bladder was much distended with bloody urine. 



The cerebrospinal meninges were intenselj" congested. 



The gray matter of the brain was'reddened, and the ijuncta vasculosa 

 in the oval centers A^ery marked. 



Observation XVIII, August 21, 1868. — Black steer ; the property of 

 Messrs. Palmer and Perry. Died during the day. Post-mortem exam- 

 ination at 6 p. m. Respiratory passages normal ; cadaveric congestion 

 of left lung. On opening the pericardium, the heart was found exten- 

 sively ecchymosed at the base of the right ventricle, and over the origin 

 of the pulmonary artery. The right cavities contained a little dark, 

 semi-tluid blood. The left side was nearly empty, but on the columnfe 

 earner of the ventricle there was a dark piuplish tint of the endocardium 

 from extensive extravasations of blood in and beneath its structure. 

 The digestive organs anterior to the true stomach were sound. The car- 

 diac end of the abomasum was of a diffuse red color. The mucous 

 membrane of the pyloric end was of normal color, wherever it was not 

 eroded, but it was studded witli between twenty and thirty abrasions 

 of the epithelium, exposing the vascular membrane in patches varying 

 from oue-fourtli to one and one-half inch in length, and usually longer 

 than broad. The duodenum was turgid with bile. The jejunum was 

 extensively ecchymosed on its inner surface. The large intestine healthy, 

 except some extravasation on the rectal folds. 



The liver and gall bladder, of general normal look, but congested, 

 weighed twenty-seven pounds. The gall bladder was distended by 

 inspissated bile. The gland itself was softened by fatty change. The 

 spleen, dark and softened, weighed seven and one-fourth pounds. The 

 kidneys were intensely congested, but not ecchymosed. The bladder 

 was full to repletion of bloody urine, but its coats were normal. Dark- 

 ness precluded the examination of tlie brain and spinal cord. 



Observation XIX, August 20, 1808. — Two-year-old roan steer; the prop- 

 erty of Mr. Richard Callahan, near Abilene. Organs of resinration healthy. 

 Heart flabby and blood-stained on the posterior ventricular furrow. In- 

 terior of right side unchanged, but on the septum, and fleshy pillars in 

 the left ventricle, were extensive ecchymoses. 



On opening the abdomen the peritoneum was found studded with 

 punctiform ecchymoses. 



Organs of deglutition and first three stomachs normal. The cardiac 



