DESCRIPTION OF SPECIES. 



513 



• and greenish, and on potato yellow- 

 ish. 



They occur in water. 



Bacillus foetidus {Bacterium 

 fcetidum, Thin). — Cocci, short rods, 

 long rods, and leptothrix. The 

 cocci, 125 to li n in diam., occur 

 singly or in pairs. Spore-formation 

 present in the rods. 



They were isolated from the 

 exudation in a case of profuse 

 sweating of the feet,, and the odour 

 was noticeable in the cultivation 

 (vide Bacillus saprogenes). 



Bacillus foetidus ozsenx (Ha- 

 jek). — Short rods, singly, in pairs, 

 and in short chains. Motile. 



Colonies irregular and liquefying. 



In the depth of gelatine lique- 

 faction occurs along the track of 

 the needle. 



On agar the growth is moist and 

 shiny, and on potato yellowish- 

 brown. 



Cultures emit a disagreeable 

 odour. 



They produce a fatal result in 

 mice and local inflammation in 

 rabbits. 



They were isolated from cases 

 of ozsena. 



Bacillus fulvus (Zrmmermann). 

 — Rods -88 to 1'3 fi in length, 

 ■77 fi in width. Singly, in pairs 

 and in chains. 



Colonies vary in form ; granular, 

 yellowish-grey. 



In the depth of gelatine there is 

 a scanty faintly yellow growth in 

 the track of the needle, and a 

 hemispherical yellow mass on the 

 free surface. 



On agar and potato the growth 

 is yellow and shining. 



They occur in water. 



Bacillus fuSCUS (Zimmermann). 

 — Rods 63 fj. in width, varying in 

 length ; sometimes bent and irregu- 

 lar in form. 



Colonies irregular, granular, and 

 greyish-yellow. 



In the depth of gelatine a 

 hemispherical mass appears on the 

 free surface, which later spreads 

 and forms a yellow wrinkled layer. 

 On agar and potato the layer is 

 similarly coloured. 



They occur in water. 



Bacillus fuscus limbatus 

 (Scheibenzuber). — Rods and fila- 

 ments. 



Colonies with brown nucleus and 

 light periphery. 



Inoculated in the depth of gela- 

 tine the growth in the track of the 

 needle is branching and the jelly 

 coloured brown. 



On agar and potato the growth 

 is dark brown. 



They occur in rotten eggs. 



Bacillus gallinarum (Bacillus 

 of Foiol Enteritis) (see p. 230). 



Bacillus gasoformaus (Eisen- 

 berg). — Rods, i 



The colonies are granular, and 

 liquefy the gelatine. 



The bacilli inoculated in ' the 

 depth of gelatine rapidly produce 

 liquefaction in the track of the 

 needle, and formation of gas 

 bubbles. 



They occur in water. 



Bacillus gingivaB pyogenes : 



vide Bacterium gingivce pyogenes. 



Bacillus glaucus (Maschek). — 

 Rods. 



The colonies are well-defined, 

 greyish in colour, and after a time 

 liquefy the gelatine. 



The bacilli inoculated in the 

 depth of gelatine produce a rapid 

 growth in the track of the needle 

 and on the surface, followed by 

 liquefaction and a sediment at the 

 bottom of the liquid. 



On potato and agar they form a 

 greyish layer. 



They occur in water. 



Bacillus gliscr ogenus (Malerba). 

 — Rods '57 to 1' 14 /i in length, -41 jj. 

 in width. 



Colonies spherical, granular. 



The bacilli inoculated in the 

 depth of gelatine give rise to a 

 growth in the track of the needle 

 composed of closely packed disc- 

 shaped colonies. 



On agar they produce an opales- 

 cent film. 



On potato they form a viscid 

 yellowish growth. 



They were isolated from viscid 

 urine. 



Bacillus gracilis (Zimmer- 



33 



