EQUINE PIROPLASMOSIS 



129 



Phagocytosis of infected red corpuscles is frequently observed in 

 the days following the febrile period. The phagocytes are exclu- 

 sively mononuclears. 



The following is a case, dog No. Gl, given by Nocard and Motas 

 as typical of the chronic form of the disease: 



Table XXXIX. — Chronic Canine Piroplasmosis (Nocard and Motas). 



EQUINE PIROPLASMOSIS; EQUINE MALARIA; SOUTH AFRICAN HORSE 



SICKNESS 



The soecific cause, Babesia equi, discovered by Guglielmi. 

 closely resembles Babesia bigemina. The parasites are found 

 without difficulty in the peripheral blood during the febrile period 

 but disappear later. They are transmitted as shown by Theiler 

 by Rhipicephalus evertsi. 



The parasites appear as small spherical or elongated, oval or 

 rarely pyriform bodies and are nearly always within red corpuscles. 

 It is not common to find them free in the plasma. The parasites 

 are from .o-2 x /i\^ in diameter, the most common being 1-1^/x. 

 Stained by Romanowsky's or Laveran's method the cell body 

 takes a bluish tint, the karysome a red-violet color. The following 

 forms of the parasite are described by Bowhill: (1) large and small 



