67 



Exotoxin. 



+ 



( + ) 

 + + + + 



+ + + 

 + 



+ + 

 + + 

 + + 



+ 



+ 



+ + 



+ + + + 



Patho- 

 genicity to 

 Guinea-pigs. 



( + ) 



( + ) 



+ 



+ 

 ( + ) 



+ 



+ 



( + ) 



+ 

 + 

 + 



( + ) 



Remarlis. 



Possesses a capsule. 

 Vanillin violet test + . 



Feeble aerobic growth. 



Only toxigenic strains are patho- 

 genic ; Indole + . 



5 types, A, B, C, D and E, each 

 with a different toxin. Some 

 strains not proteolytic. 



Pathogenic only when freshly 

 isolated. 



Possesses a capsule. Non-motile. 

 Four t3rpes, each with a differ- 

 ent combination of toxins. 



Feeble aerobic growth. 



Grows aerobically. 



Indole ( + ), 



Indole +. 



Indole ( + ). 



(under " Spores ") = oval ; or o (under " Cooked Meat Medium ") '= foul odour ; 

 xtls = late deposit of white crystals. Small-letter symbols indicate a slighter degree of change. 

 Under exotoxin, +. + + . + + + » + + + + indicate the I'elative potency of toxic filtrates. 



875 



