82 



Bulletin No. 207. 



c-91 isolated from the horse fatally afflicted from drinking the 

 water in which the oat hay was immersed. 0.02 cc. of this or- 

 ganism in broth culture proved fatal to guinea pigs, per os. 



The Serological Relation of Botulism Antitoxin to the 

 Organism Isolated from the Oat Hay Water. 



It was observed that a fatal amount of the organism (go-6) 

 was successfully neutralized by the injection of botulism anti- 

 toxic serum from the goat (Chart J), from the sheep (Chart 

 K and Fig. 25), and from the cow (Chart L and Fig. 26). 

 Guinea pigs receiving % to 2 cc. serum intraperitoneally were 

 invariably protected against a fatal infection of the organism 

 administered by the mouth. 



CHART J. 



Serological Relation of Botulism Antitoxin (Goat Serum E clear) to 



an Organism go-6. 



Serum administered intraperitoneally Feb. 28, 1917, 11:45 a. m. 

 Toxin administered by the mouth March 1, 1917, 11:45 a. m. 



