PLATE I. 



v^ 



Parasitic interstitial pneumonia, from the lungs of a guinea-pig 

 infected with anthrax. Hartnach. Obj. 4. O. 2. Picro-carmine- 

 gentian. 



a. Periarterial growth. 



b. Wall of artery. 



c. Thrombus with bacilli. 



