PLATE IX. 



Fig 



Fig. 3. 



Photo by F. Holmes, Brislol. 

 CULTURES OF JOHNE'S BACILLUS. 



Fig. I. — Primary culture from experimental goat No. i on an egg medium 

 made up with saline and containing i per cent, of dead B. phlei and 

 4 per cent, glycerine. 



Fig. 2. — Primary culture from experimental goat No. 2 on same medium 

 as Fig. I. 



Fig. 3.— Streak culture from experimental calf No. 5 on an egg medium 

 made up with peptone -beef broth and containing i per cent, of dead 

 B. phlei and 4 per cent, glycerine. 



[To face page 150. 



