146 



ESSENTIALS OF BACTERIOLOGY 



the blood has protective properties of a specific nature; it has 

 bactericidal properties against cholera vibrio, and by the 

 injection of this serum into non-immune animals it renders 

 them immune. The blood-serum of convalescents and cholera- 

 vaccinated individuals contains the same bactericidal sub- 

 stances. 



Serum therapy has not been success- 

 ful. 



Bacteria Similar to the Spirillum of 

 Cholera. Finkler-Prior Vibrio, or 

 Spirillum Finkleri. Origin. Found in 

 the intestinal contents of a patient suffer- 

 ing from cholera Asiatica in 1884, by 

 Finkler and Prior, who thought it iden- 

 tical with the spirillum of cholera; it 

 differs from it, however, in many ways, 

 and has been found in healthy persons. 



..**rj^ v*> v^> 



^ "~ 



"^5xV> y ^ 



Fig. 84. Spirillum Finkleri (x 700) (Fliigge). 



Fig. 85. Stab culture 

 (Finkler-Prior). 



Form. Somewhat thicker than the cholera vibrio, but forms 

 the long spirilla less often. Has flagella. 



Properties. It is very motile. Liquefies gelatin in a short 

 time. 



Growth. It grows quickly at ordinary room temperature. It 

 is facultative aerobic. 



Colonies on Gelatin Plates. Round, finely granular colonies, 

 which in twenty-four hours are ten times as large as the cholera 

 colonies, and in forty-eight hours the whole plate is liquefied, 

 it being then impossible to distinguish any separate colonies. 



