VIBRIO AND SPIRILLUM 



451 



action of cholera serum of human beings against the cholera 

 vibrio, taken together with Pfeiffer's germicidal action of 

 cholera serum of immunised guinea-pigs, and the results 

 of Haffkine's protective inoculations on human beings — form 

 as strong a body of evidence as can be expected — seeing 

 that animals are not subject to cholera — to confirm Koch's 

 original view as correct, viz., that the vibrio is the microbe 



Fig. roi. — Fil:\i Spfci.men of I'Ektttine.vl F.vlmiatio.m of .^ r;uiNE.\-riG dead 



AFTF:r !.\TlvAl'EKnONE.^L InJECIION UV CULTUKE OF VlBKlO FlNKLER- 



Peiok. 



X looo- 



of cholera, that the growth and multiplication of this within 

 the cavity of the intestines produces toxins which absorbed 

 into the system cause the disease cholera. Consequently 

 consumption of articles of food, water and solids, con- 

 taminated with cholera vibrios, derived directly or indirectly 

 from the discharges of a cholera case, as also direct con- 

 tamination and introduction of cholera vibrios into the 

 alimentary canal, are capable of causing cholera. 



G G 2 



