i86 INFECTIOUS AND PARASITIC DISEASES. 



bedding, cloths, etc., where this is possible; 

 where destruction is not feasible, use 

 (i) Super-heated steam (15 pounds pressure), 15 

 minutes. 



(2) Tricresol, or lysol, 2 per cent solution, for two 



hours. 



(3) Bichloride of mercury (1-500), for one hour. 



(4) Formalin, 15 per cent solution, one and one- 



half hours. 



(5) Boiling water, or steam, for two hours. 



Bubonic Plague (la peste, black death, etc.). 



(a) Cause: Bacillus pestis; non-sporogenous. 



(b) Localized: Skin and subcutaneous tissues; 



lymph-glands; lungs; and intestinal tract. 



(c) Entry : Wounds of skin ; nose and mouth through 



air; mouth in food and water. 



(d) Exit: In any of the discharges from situation 



where disease is localized; therefore, sup- 

 purations, suppurating buboes, abscesses, 

 blisters, sputum, vomit, feces, urine. 



(e) Contracted: By inhalation through contact 



with sick; through wounds contaminated 

 or caused by infected fleas, flies, ants, 

 etc., also food and water contaminated by 

 the sick, or infected vermin, e.g., rats, 

 mice, etc. 



Note : — Use all chemical disinfectants at or near the boiling point. 



