518 



DESCRIPTION OF SPECIES. 



filaments both in gelatine and agar. 

 Cultures produce a disagreeable 

 odour. 



Subcutaneous inj ections in guinea- 

 pigs and rabbits produce local oedema 

 and death, with hemorrhages in the 

 internal organs. 



They were isolated from the blood 

 in fatal cases of purpura in children. 



Bacillus in putrid bronchitis 

 (Lumnitzer). — Kods 1'5 to 2 /i in 

 length, slightly curved. They can 

 be cultivated at 37° C. The colonies 

 on agar are greyish-white. 



The bacilli inoculated on blood 

 serum produce colonies which co- 

 alesce and form a greyish-white 

 film. Cultures have a disagreeable 

 odour. 



Injected into the lungs of rabbits 

 they produce purulent inflammation . 



They were isolated from the 

 sputum in cases of putrid bronchitis. 



Bacillus in "red-cod." (Dautec). 

 — Eods similar to Bacillus tetani, 

 with terminal spore-formation. 

 ♦^1 Colonies are circular ; reddish. 

 ,, On the surface of obliquely 

 solidified gelatine they form a red 

 growth in the track of the needle 

 slowly followed by liquefaction. 



Cultivated on dried cod they 

 produce a red colour. 



They were isolated from red-cod. 



Bacillus in rhinoscleroma (p. 

 411). 



Bacillus in saliva (Fiocca). — 

 Very short rods -2 to 33 /i in width. 



Colonies circular, granular, and 

 yellowish. 



On the surface of obliquely 

 solidified gelatine they form a 

 growth composed of transparent 

 droplets. 



On potato they form a transparent 

 film. 



In broth flocculi appear. 



They are pathogenic in rabbits 

 and other small animals, and they 

 are probably a variety of the bacillus 

 of hsemorrhagic septicaemia. 



They were isolated from saliva of 

 cats and dogs. 



Bacillus in whooping cough 

 (Afanassiew). — Eods -6 to 2-2 n in 

 length, singly, in pairs, and short 

 chains. 



Colonies granular, brownish. 



Inoculated in the depth of gela- 

 tine there is a scanty growth in the 

 track of the needle and a greyish 

 growth on the free surface. 



On agar the growth is greyish. 



On potato the growth is shining 

 and yellowish or brownish. 



They are said to produce symp- 

 toms in rabbits and dogs compar- 

 able to those of whooping cough. 



They were isolated from the 

 throat in cases of whooping cough. 



Bacillus incanus (Pohl). — Eods 

 12 fi in length, '8 fi in width. 



They produce rapid liquefaction 

 in the track of the needle when 

 inoculated in the depth of gelatine. 



On agar a thick white growth 

 develops. 



On potato a whitish growth 

 spreads over the surface. 



They were isolated from the 

 water of marshes. 



Bacillus indicus (Koch).— Very 

 short rods with rounded ends. 



Fig. 204.— Bacillus Indicus Colonies 



IN NUTEIENT AgAK, X 60. 



The colonies have a scarlet tint. 

 They are round, ovoid, or spindle 

 shaped, and have granular margins. 



In the track of the needle beneath 

 the surface no pigment is formed. 



Cultivated in nutrient gelatine 

 they liquefy it and colour it crimson, 

 and the growth of a darker crimson 

 hue subsides to the bottom of the 

 tube. 



On the surface of nutrient agar- 

 agar the appearances are very 

 characteristic. In a pure cultiva- 

 tion a brilliant vermilion-coloured 

 reticulated pellicle develops on the 

 surface. (Plate II. Fig. 3.) 



