140 PEINCIPLES OF VETERINABY SUEGEBT 



Which foreign todies of parasitic origin are of interest to ths 

 surgeon ? 



In the horse : 1. Filaria Papillosd. Found in the anterior- 

 chamber of the eye, giving rise to iritis and keratitis. Treat- 

 ment consists of operative measures. This parasite has als» 

 been found in cryptorchids and hydrocele. 3. Filaria cincin- 

 nata. Occasionally causes a tendinitis in Russian horses. 

 3. Filaria medinensis. Seen in the suhcutis of horses ia 

 tropical countries, as East India, Africa, etc. It causes a 

 form of elephantiasis (strongulus armatus). Has been found 

 in the hypertrophied nasal mucous membrane. 4. Sarco- 

 sporidia. When present in great numbers give rise to an 

 interstitial myositis. 



In cattle : 1. Coenurus cerebralis. Produces symptoms of 

 brain disease, as vertigo, wabbly gait, blindness, even para^ 

 plegia. Treatment by trephining. 3. Hypoderma bovis.- 

 Forms nut sized tumors, each tumor representing an abscess 

 containing the larva. Treatment : Split the abscess and 

 squeeze out the contents. 



In sheep : 1. Coenurus cerebralis. Same as in cattle. 

 3. CEstrus ovis. Located in the nasal and maxillary sinuses, 

 giving rise to a chronic catarrh of the mucous membranes of 

 those parts. Treatment consists in blowing some mild irri- 

 tant into the nasal cavity, or for those in the' sinus by 

 trephining, with subsequent irrigation of frontal sinus. 



In swine : The Cysticercus cellulosce, has been found in 

 the eye. 



In the dog : 1. Pentastomv/m tce,nioides. In the nasal 

 cavity and frontal sinus, causing a purulent rhinitis. Treat- 

 ment : Trephine frontal sinus and inject benzine. 2. Filarid 

 medinensis. In the subcutis, producing a form of elephan- 

 tiasis in dogs of tropical climes. 3. Spiroptera sanguimh 



