Show arc dog bacillus access body skin part abrasion wound bacilli swell call rat added form plague liable 1169 us plague today lineal descendant away london great fire epidemic history us europe during past dirt soil place know germ plague 1694 same whose serum preventive germ somewhat bacillus temperature blood germ multiply gluing off reed simple division parent temperature fahrenheit act found plague germ soil soil earth non virulent another say say bay say bay tay animal body pee powers sheep course line become known plague infect rat share diffusion mi infect rate way inoculate hence crusade against ge case infectious |