384 



BACILLI WHICH CAUSE PUTKEFACTION. 



Zoogiaea 



comonas. At the outer margin of the puncture a ring- 

 like zone appears which is filled with a network oi 



Fig. 107s. Involution forms of Proteus mirabilis X 524> 



bacilli and] threads, and which shows numerous spirilla 

 and spirulina forms. After about 48 hours the superficial 

 colonies become confluent, and form a thick, moist 



shining greyish layer, 

 which presents a 

 markedly sieve - lik< 

 appearance. Tota' 

 liquefaction of the 

 gelatine does not begir 

 till after 2 to 3 days. 

 The growth in strongei 

 gelatine, and in th< 

 other nutrient ma 

 terials, presents th< 

 same characters as ir 

 the case of Proteus 

 yulgaris ; but in cul 

 tivations in whicl 

 oxygen is absent IK 

 liquefaction of the 

 gelatine occurs ever 

 after a long time 

 Proteus mirabilis is 

 also similar to th< 

 foregoing form in Hi 



Fig. 103. Zooglasa forms from a cultiva- 

 tion of Proteus mirabilis X 95. 



fermentative action on egg 

 pathogenic action. 



albumen as well as in it* 



