2o8 MICRO-ORGANISMS AND DISEASE [chap. 



:. 67 —Film Specimen of Heart's Elood of Fowl dead of Fowl 

 Cholera. Numerous Oval Bacilli with Polar Staining amongst the 

 Red Blood Discs, 



X 1000. 



68. — Gelatine Pla.te Cultivation of Bacillus of Fowl Cholera 

 after Three Days' Incubation at 20" C. 

 Natural sizs. 



