DESCRIFHON OK SPE< LE8. 





Colonies circular, later irregular, 

 granular, strongly refractive and 

 yellowish - brown. They are 



probably identical with Bacillus coli 

 communis. 



They were isolated from cases of 

 cholera at Naples. 



Bacillus necrophorus (Loffler). 

 Rods and filaments. 



They cannot be cultivated on the 

 ordinary media. In rabbit broth 

 they give rise to fluffy masses of 

 filaments. 



Intravenous injection produced 

 in rabbits a pyaemic condition in 

 about a week. The bacilli were 

 found in the pus. 



They were isolated from a rabbit 

 which had been inoculated with 

 fragments of a condyloma. 



Bacillus nitrificans (Wino- 

 gradsky). Yery small rods - 5 /* in 

 in length, singly and in zooglcea. 



Colonies in silica jelly are 

 lenticular, and sub-cultures in liquid 

 media produce a gelatinous de- 

 posit. They are powerful oxidising 

 agents. 



They were isolated from the soil. 



Bacillus nodosus parvus 

 (Lustgarten). Rods 1 '2 to 2*4 p. in 

 length, -4 p in width ; singly and 

 in pairs. 



Inoculated in the depth of agar 

 they produce a white filament in 

 the track of the needle composed 

 of crowded colonies, and on the 

 surface a hemispherical glistening 

 growth. 



They were isolated from the 

 human urethra. 



Bacillus nubilus(Frankland). 

 Slender rods 3 p long and *3 \L wide, 

 and threads. Single bacilli have an 

 active rotatory movement, but the 

 long threads in broth cultun 

 quite motionless. Spore-formation 

 not observed. 



The colonies appear as cloudy 

 undefined patches, which rapidly < 

 liquefy the gelatine. They c<> 

 of a tangled mass of threads. 



Inoculated in the depth of gela- 

 tine they produce along the track 

 of the needle horizontal circular 

 plates, with a delicate cloud-1 ike- 

 appearance, and liquefaction at the 



upper part. Lau-r th,. whole of 

 the gelatine i> li.ju- : 



On agar they tVm thi,, ,)jla- 

 cent blue-violet Him. tin- .-.(- 

 which exhibit la 

 fluorescence. 



On potato there is a slightly 

 yellow growth which is scarcely 

 visible. 



Broth is rendered turbid with a 

 dirty- white d-: u-face 



being covered by a thin pdlirl,-. 



They occur in water. 



Bacillus ochraceus (/ir 

 mann). Rods 1 _'.". IL in 



length; "65 to !', M in width: 

 singly, in pairs, chain-, and fila- 

 ments ; capsulated. 



Colonies circular, granular, yel- 

 low, liquefying. 



Inoculated in the depth of gela- 

 tine they produce liquefaction in 

 the track of tin- nee<l 

 yellow deposit. 



On agar and potato the growth 

 is yellow ochre in colour. 



They occur in \v 



Bacillus oedematis aerobicus 

 (Klein). Rods -8 to -J-4 M in length, 

 ? p. wide, and long filament-. 



Colonies greyish, transparent, 

 with irregular contour. 



In the depth of gelatine a fila- 

 ment occurs in the track of the 

 needle, and gas lu I >lated 



colonies in its lower part, and a 

 transparent patch with irregular 

 margin on the f n 



On the surface of agar they pro- 

 duce a greyish white ! 



In broth there is turbidity with 

 flocculi. 



On potato the growth is yello 

 and v: 



Tl icy give rise to extensive oedema 

 in guinea-pigs, and in a less marked 

 form in rabbits. 



They occur in earth. 



Bacillus cedematis maligni 

 (p. -'-'<>). 



Bacillus of Belfanti and Pas- 

 carola. V 



Colonies circular, granular, yel 



Inoculated in th, -ela- 



rhey produce a filan 

 posed of closely-packed minute 



