558 Veterinary Medicine. 



report cases of extensive abscesses in the head of the spleen and 

 intimately connected to both stomach and diaphragm. Hahn 

 found abscesses in connection with the penetration of the spleen by 

 foreign bodies. In other cases the substance of the spleen was 

 studded with abscesses varying in size from a pea upward and 

 containing necrotic tissue or adjoining such dead tissue. 



Ruminants. In cattle the penetration of the spleen by sharp 

 pointed bodies coming from the reticulum appears to be the mo.st 

 common cau.se of absces.s,. Other cases depend on the penetration 

 of distomata carrying the pyogenic microbes, and .still others are 

 due, as in the horse, to local infection with embolism. External 

 traumatisms are unusual causes. There is usually considerable 

 enlargement of the spleen as a whole, rounded swellings indicat- 

 ing the seat of the abscess, and adhesions to surrounding parts, 

 such as the rumen, the left kidney or the diaphragm. When the 

 abscess is chronic, there is emaciation, unusual flatness on percus- 

 sion of the left hypochondrium, and, at times, of the flank, swell- 

 ing and tenderness of the flank, above all, according to Im- 

 minger, a persistent elevation of temperature (104° to 106° F.), 

 which is not lowered by antithermics, and albuminuria. In cattle 

 it is sometimes possible to diagnose the di.sea.se, and if the abscess 

 can be definitely located, aspiration and antiseptic injections into 

 the sac would be indicated, conjoined with calcium sulphide, or 

 sodium sulphite internally. 



FOREIGN BODIES IN THE SPI.EEN. 



In horse : body from intestine. In ruminants bodies from reticulum. 

 Laparotomy. 



One such case in the Horse is reported by Hahn. A mare had 

 loss of appetite, slight colics, frequent efforts to urinate, dullness, 

 prostration, profu.se perspirations, and tremors of the mu.scular 

 walls of the abdomen. Rectal examination detected a staff-shaped 

 body extended from behind forward in the direction of the 

 •stomach. The mare survived twenty days, when it was carried 

 off by a more violent access of colic. At the necropsy, the 



