PLATE IV. 
Fies. 1, 2, and 3.—Leucocytes from the spleen of an inoculated 
monkey, containing Spirillum Obermeieri. (Soudakewitch.) 
Fires. 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. (Metsch- 
nikoff.) 
Fic. 6.—Leucocyte from a frog seventy-two hours after the injection 
of anthrax spores. (Trapeznikoff.) 
Fies. 7 and 8.—Leucocytes from a chicken four hours after the in- 
jection of anthrax spores. (Trapeznikoff.) 
