558 Veterinary Medicine. 



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

 intiniateh^ connected to both stomach and diapliragni. Hahn 

 found abscesses in connection with the penetration of the spleen by 

 foreign bodies. In other cases the substance of tlie 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 most 

 common cause of abscess. 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 ab.scess, and adhesions to surrounding parts, 

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

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

 sion of tlie 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 disease, 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 internall\-. 



FOREIGN BODIES IN THE vSPEEEN. 



In horse : body from intestine. In rnuiinaiits bodie.s from reticulum. 

 L/aparotomy. 



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

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

 prostration, profuse perspirations, and tremors of the muscular 

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

 body extended from behind forward in the direction oi the 

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

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



