TUBERCULOSIS 



111 



Table XXXII. — The Leucocytes in Cases of Glanders in Horses (Bur- 

 nett AND PEARCE). 



TUBERCULOSIS 



Much fewer cases of blood examination have been reported for 

 tuberculosis in animals than for glanders. An anemia usually 

 moderate but occasionally very severe is ordinarily found in un- 

 complicated cases of the chronic disease. The Hb suffers relatively 

 greater diminution than the red corpuscles. In man the majority 

 of the cases of chronic phthisis show but little change in the 

 number of red corpuscles and amount of Hb, though the patient 

 may be pale and emaciated. In such cases the normal counts are 

 explained by there being a loss of fluid from the blood which 

 masks the loss of red corpuscles and Hb. This oligemia is due 

 (Ewing) "to the specific lymphogogic action of the toxins of the 

 tubercle bacillus, by which there is established a continuous 

 excess in the balance of fluids which leave the tissues through the 

 lymphatics." "In the majority of cases of well-advanced phthisis 

 (in man) therefore, approximately normal blood indicates con- 



