CANINE PIROPLASMOSIS 



127 



parasites in great numbers in the small capillaries of the internal 

 organs, in kidneys 95% of the corpuscles were infected, while in 

 the larger vessels there was a small proportion of infected cor- 

 puscles. 



Changes in the blood. — A severe, progressive anemia is the 

 chief feature of the disease. From the time of the appearance 

 of the first symptoms the number of red corpuscles decreases slowly 

 and regularly, then at the time of the hemoglobinuric crisis falls 

 suddenly to two millions and below (Nocard). The Hb decreases 

 parallel to the red corpuscles from 12-13%, the normal, to six to 

 four and three and one-half per cent. The greatest reduction 

 found by Wright was from 110-18%; the smallest amount of 

 Hb 17%. Nocard and Motas give the following as a typical acute 

 case: 



Day Red Corpuscles 



The following are two cases reported by Wright: 



Table XXXVIII. — Two Cases of Canine Piroplasmosis (Wright) 



Dog III 



parasites 

 found. 



