PLATE IV. 



FIGS. 1, 2, and 3. Leucocytes from the spleen of an inoculated monkey, 

 containing Spirillum Obermeieri. (Soudake witch.) 



Fias. 4 and 5. Leucocytes (" macrophages ") from a preparation of 

 muscle from a pigeon which succumbed to an anthrax inoculation. In Fig. 

 4 the bacilli are deeply stained ; in Fig. 5 they are pale. (Metschnikoff.) 



FIG. 6. Leucocyte from a frog seventy-two hours after the injection of 

 anthrax spores. (Trapeznikoff.) 



FIGS. 7 and 8. Leucocytes from a chicken four hours after the injection 

 of anthrax spores. (Trapeznikoff.) 



Brt. pp. 174- 71S. 



