PLAGUE 169 



oxygen; readily killed by heat; strong resistance against cold. Gains 

 entrance through skin abrasions, more often flea bites. 



Bacillus pestis. Smear from gland juice, 1/12 oil immersion. 



Bacillus pestis. Blood film, 1/12 oil immersion. 



PLAGUE IN RATS. 



Acute and chronic. 



In the acute type bubo is found in the neck or axilku in 85 per 

 cent, of infected rats. There is subsequent congestion, purplish-red 



