EPIDEMIC DISEASE OF MICE. 359 



Bacillus Typhi Murium. — Rods varying in length ; and fila- 

 ments ; motile ; flagellated. The colonies are circular, brownish 

 and granular on the surface of obliquely solidified gelatine. The 

 bacteria inoculated on the surface produce a greyish-white semi- 

 transparent growth, and on agar and potato the appearance of the 

 growth is very similar. They can be cultivated readily in milk and 

 in broth. White and field mice are killed in from one to two 

 weeks, when given bread moistened with a culture. 



Lbfiler claims to have used this method with success in Thessaly, 

 where there was a plague of field mice causing great losses to 

 agriculturists. 



