FOWL CHOLERA 



103 



one would expect to find a polycythemia. The clinical symptoms 

 would lead one to expect an anemia to be present, the effect of 

 which is masked by the effect of purgation. Mohler and Washburn 

 state that poikilocytosis is shown in the later stages of the disease. 

 A greater number of examinations and a more detailed study of the 

 blood in the various stages of the disease are needed. 



FOWL CHOLERA 



In this disease the changes in the blood in the cases of natural 

 infection in which examinations have been made are those of 

 anemia with moderate leucocytosis. In two cases naturally in- 

 fected Ward reports the following: 



Fowl A red cells 1,710,000 leucocytes 58,000. 

 " B " " 1,925,000 " 45,000. 



In three cases infected by ingestion he obtained the following 

 counts: 



No. 3 red cells 2,290,000 leucocytes 23,000 3 days after exposure. 

 No. 3 " " 2,800,000 " 20,000 4 days after exposure. 



No. 6 " " 3,930,000 " 37,000 3 days after exposure. 



No. 8 " " 4,490,000 " 87,000 3 days after exposure. 



No. 8 " " 2,960,000 " 101,000 4 days after exposure. 



In five cases inoculated with cultures of fowl cholera bacteria, 

 Ward found the following conditions: 



Table XXVII. — Experimental Cases of Fowl Cholera (Ward) 



A study of the variety of leucocytes was not reported. 



