STUDIES ON PNEUMONIC PLAGUE AND PLAGUE 

 IMMUNIZATION. 



ILLUSTRATIONS. 



Plate I. 



Pneumonic plague hospital, Mukden. 

 Fig. 1. Side view. 

 2. Rear view. 



Plate II. 



Fig. 1. American laboratory within courtyard of plagiae hospital, Mukden. 

 2. Room in which necropsies were performed in Mukden. 



Plate III. 



Fig. 1. Ward with attendants in plague hospital, Mukden. 



2. Some of the nurses and attendants outside of plague ward. 



Plate IV. 



Uniform adopted for protection from infection when in contact with 

 pneumonic-plague cases. 



Plate V. 



Masks for protection against pneumonic plague. 

 Fig. 1. The Mukden mask. 



A, The many-tailed bandage to hold the pad securely in place. 



B. The cotton pad wrapped in gauze. 



2. Two subjects wearing the modified Broquet mask and the Mukden 

 mask, respectively, ready for exposure to the sprayed bacilli. 



Plate VI. 



The tarbagan {Arctoitiys bobac Schreb.). (Photograph by Dr. Wu.) 



Plate VII. 



Fig. 1. Lung of guinea pig which died of advanced plague infection after 

 being exposed to air in which plague bacilli were suspended by 

 means of spraying. 



2. Lung of monkey which died of pneumonic-plague infection from 



inhalation; lobular pneumonia. 



3. Lung of monkey which died of pneumonic-plague infection from 



inhalation, showing progression of lesions; lobular and lobar 

 pneumonia. 



269 



