PRINCIPLES OF VETERINARY SURGERY 391 



dium gets clearer and a precipitate falls to the bottom of 

 the container. On gelose the vibrio forms little whitish 

 spots, which when examined with the microscope show them- 

 selves to be composed of tree-like filaments. In gelatine 

 the colonies cause local liquefaction, which manifests itself by 

 forming small liquid spheres. This liquid, clear in the be- 

 ginning, becomes muddy and shows fine radial striatiohs at 

 the periphery. 



Fig. 37. 

 Spore Formation of the Septic Vibrio. (From Roux and Mace.) 



On potato, the colonies develop deeply and form a close- 

 meshed net-work. On solidified serum, liquefaction occurs 



rapidly. 



EXPERIMENTAL STUDY.— It was Bottini, of Novar, 

 who first tried the inoculation of the septic vibrio in the rab- 

 bit and cavy. He has exactly described the resulting les- 

 ions. In 1879, Tedenat, in Lyons, successfully inoculated 

 the serum of blisters. Chauveau and Arloing submitted the 

 knowledge of that day to the control of an extended- exper- 



