Hepatic Hcemorrhage or Riiptme. 489 



its deep black contrasts stroiigl}' with the white of the adjacent 

 capsule. When laid open the hepatic tissue is seen to be softened 

 and pulpy, and its dark color forms a striking contrast with any 

 surrounding fatty liver. An)' form of degeneration may be 

 revealed on microscopic or chemical examination. Not unfre- 

 quently small clots of blood form under the capsule raising it in 

 the form of little sacs. Such clots are usually stratified indi- 

 cating a succession of small hemorrhages. 



When the capsule is torn, the lesion may extend from one sur- 

 face of the organ to the other, and the edges, smooth, uneven or 

 fringed, are united together by a blood clot. 



In case of hemorrhagic infarcts the lesion usually has a dis- 

 tinctly conical outline corresponding to the vascular distribution. 

 These are especially characteristic of cases supervening on heart 

 disease. 



The volume of the liver is usually increased and the weight 

 may reach 30 lbs. (Schmeltz), 34 lbs. (lyorge), or even 66 lbs. 

 (Trasbot). 



In other' domestic animals analogous lesions are found modified 

 largel}' according to the size of the subject. 



Symptoms. These may develop instantaneously without any 

 marked 'premonitory indication. In other cases tenderness on 

 percussion over the liver, stiffness or groaning under sudden 

 movements or turning, arching of the back, hanging of the head, 

 slowness in rising, co.stiveness, slight transient colics, and even 

 icterus may have been detected on close observation. The symp- 

 toms of actual rupture are essentially those of internal 

 hemorrhage. The animal becomes weak, or unsteady upon its 

 limbs, perspires, arches the back, and shows a marked pallor of 

 the visible mucosae. The pulse is small, thready, weak and 

 accelerated, and the heart beats violent or palpitating. The per- 

 cussion dullness over the liver is extended (Weber), the loins 

 become insensible to pinching, and there may be some distension 

 of the abdomen. Dilatation of the pupils, retraction or rolling 

 of the eyes, amaurosis, tremors of the muscles of tlie neck, 

 lying down, or falling, and general convulsions may precede 

 death. This may occur in a few hours or it may be delayed if 

 the lesions are restricted. In ca.se of survival, coldness and 

 oedema of the extremities and sheath have been observed. The 



