104 



SPECIFIC INFECTIOUS DISEASES 



fowl typhoid (Infectious leukemia in fowls) 

 Examinations of the blood in cases of this disease were made in 

 experimental cases by Moore and later by Taylor. They both 

 found that there is a progressive decrease in red cells and a steadily 

 increasing number of leucocytes. That is, there is a leucocytosis 

 accompanied by a marked anemia. Taylor made differential 

 counts of the varieties of leucocytes. The increase in leucocytes 

 is in the polymorphonuclears. The high number of leucocytes 

 found in the last stage of the disease is interesting. Death seems 

 to have been a gradual dissolution. Evidently the high leucocyto- 

 sis is an antemortem one. 



Table XXVIII.— Fowl Typhoid (Moore) 



