Parasites of the Liver. 337 



Rasmussen has noted a number of cases in which the disease 

 affected at once liver, spleen, peritoneum and intestine. In one 

 year (1890) he saw twenty-two cases of hepatic actinomycosis. 

 Jensen, who has also recorded hepatic cases, describes them as 

 rounded tumors of variable sizes enclosed in a fibrous covering of 

 greater or lesser thickness and somewhat softened in the centre. 

 Microscopic examination detects the club-shaped cells arranged 

 in tufts converging toward the centre. Jensen has found them 

 extending from the liver to the diaphragm, and Rasmussen from 

 the liver into the duodenum. 



Symptoms are only the general indications of hepatic disorder. 

 In cases in which the existence of superficial actinomycotic swell- 

 ings affords a reasonable clue to the true nature of the disease it 

 may be treated with potassium iodide twice or thrice a day until 

 all symptoms subside. 



T^NI^. TAPE-WORMS. LARVAL FORMS. 



The larvse of certain tape-worms infest the liver of different 

 domestic animals and prove more or less inimical to their hosts. 

 As they do not often rise to the dignity of a plague they will be 

 properly considered in this connection. These may be tabulated 

 as follows : 



Larva or Cystic Form. Host. Taenia or Adult Form. Host. 



Cysticercus TenuicoUis.Ruminants, Pigs Taenia Marginata.-Dog 



C. Pisiformis Rabbit, Hare, Birds. __T. Serrata Dog 



C. Cellulosse Pig, Dog __T. Solium Man 



r Cattle, Sheep, Goats, Pigs, Deer, -, 

 EchinOCOCCUS Catael, Dromedary, Elan, Ante- 



Veterinorum ^°roof'Rlbbft!'s^quTr?el^' Dol; T. Echinococcus_.Dog 



or Polymorphus cat, Turkey, Elephant, Ape, 

 L Man. ' 



Coeuurus, Undetermined Species Cat Unknown. 



Unknown. T. Fixnbriata__ Sheep, Deer 



CYSTICERUS TENUICOLLIS IN THE LIVER. 



This cystic worm, which is the larval form of the taenia margi- 

 nataof the dog develops in the various internal organs and serous 

 membranes of the sheep, goat, ox, deer and other ruminants, in 

 the pig and soliped. Though most commonly found under the 

 peritoneum and pleura, they also inhabit the solid organs, and 

 according to the observations of Baillet, they habitually pass 

 22 



