llis CANINE MEDICINE AND SURGERY 



the mosquito, which sucks them up from an infected 

 animal. An animal drinking this infected water 

 develops the mature form in its blood. The mature 

 forms chiefly inhabit the right heart and pulmonary 

 artery, while the embryos can be detected in the 

 blood drawn from the peripheral circulation during 

 the night, but retire to the deeper blood vessels dur- 

 ing the day. 



Symptoms. — In a great many cases no symptoms 

 of a general disturbance to health are manifested. 

 Sometimes death is sudden or has been preceded 

 for only an hour or so by labored breathing afid 

 convulsions. More frequently, however, for several 

 days before death the patients exhibit dullness, de- 

 bility, and more or less frequent epileptiform seiz- 

 ures. Epistaxis, lameness, and paralysis are also 

 observed in some cases. 



Strongylus Vasorum 



This parasite also inhabits the right heart and 

 pulmonary artery, producing endocarditis, throm- 

 bosis, and embolism. 



Besides its usual habitat in nests in the mucous 

 membrane of the esophagus and stomach. 



Spiroptera Sanguinolenta 



The Spiroptera sanguinolenta also invades the blood 

 vessels, producing arteritis and thrombosis. 



Treatment. — In all of the above infestations treat- 

 ment is unsatisfactory; but turpentine, in doses of 

 half a dram to a dram, given in emulsion with milk 

 or mucilage, has given some good results. Upon a 

 definite diagnosis being made by finding the em- 

 bryos in the blood an intravenous injection of sal- 

 T^'arsan suggests itself as a rational mode of treatment. 



