DESCRIFHON OF SPECIES. 



561 



rabbits, and local suppuration in 

 guinea-pigs and white rats. 



They were isolated from pus in 

 a fatal case of puerperal pyaemia. 



FIG. 221. PROTEUS MIRABILIS : SWARMING 

 ISLANDS ON THE SURFACE OF GELATINE, x 285 

 (HAUSER). 



Proteus mirabilis. Cocci -4 /* 

 to '9 /LI. They occur singly and in 

 zoogloea, and sometimes in tetrads, 

 pairs, chains, or as short rods in 

 twos resembling Bacterium termo 



concentric circles, which in time 

 liquefies the medium. Similar 

 movements are observed in capsule- 

 cultivations as in Proteus vulgaris. 

 They were isolated from 

 putrid meat infusion. 



Proteus septic us 

 (Babes). Kods -4 /* in 

 width, and filamentous 

 forms. 



Colonies rapidly liquefy 

 ^^s** the gelatine. 



Inoculated in the depth 

 / of gelatine the bacilli form 

 / a turbid funnel, or com- 



pletely liquefy the gelatine 

 in twenty-four hours. 



On agar the growth is 

 reticulated. 



On potato brownish - 

 white. 



Cultures have an un- 

 pleasant odour. 



They are pathogenic in 

 mice. 



They were isolated from 

 the organs in a case of 

 human septicaemia. 



Proteus sulfureus (Lin- 

 denborn). Rods -8 /* in 

 width, varying in length, 

 and long filaments. 



They correspend in mor- 

 phology and cultures with 

 Proteus vulgaris. 



They produce sulphuretted hy- 

 drogen in cultures. 



They were isolated from water. 

 Proteus vulgaris (Hauser). 



*% 



-i-^^sf* * x *<r ><7^ 



% ""^ Si /J/ ^ ^o/t \' 



>.*flPvT.^ 



FIG. 222. PROTEUS MIRABILIS.: INVOLUTION FORMS, x 524 (HAUSER). 



in fact, in all conceivable transition 

 forms. 



Cultivated on nutrient gelatine 

 they form a thick whitish layer in 



Rods varying in size ; some mea- 

 sure 4 /n in length, and are almost 

 as broad as long, and others vary 

 from -94 to 1'25 p, long and '42 to 



36 



