504 



DESCRIPTION OF SPECIES. 



oedema and death in twenty-four 

 hours. 



They were obtained from the 

 liver in fatal cases of yellow fever. 



Bacillus caeruleus (Smith). — 

 Rods 2 to 25 /i in length, and '5 fi 

 in width, singly and in chains. 



Colonies blue. 



Inoculated in the depth of gela- 

 tine they form a colourless growth 

 in the track of the needle, and a 

 cup-shaped cavity in its upper part, 

 with bluish contents. 



On agar they form a blue layer 

 and a deep-blue growth on potato. 



They occur in water. 



Bacillus canalis capsulatus 

 (Mori). — Rods '9 to 1'6 fi in width, 

 capsulated. 



Colonies milk-white. ^ 



The growth in the depth of gela- 

 tine is similar to Friedlander's 

 pneumococcus. 



On agar the growth is viscid, and 

 on potato it is yellowish. 



In broth a skin forms on the 

 surface. 



They are pathogenic in mice. 



They occur in sewage. 



Bacillus canalis parvus (Mori).. 

 —Rods 2 to 5 ^ in length, '8 to 1 /u, 

 in width. 



Colonies very minute, pale yellow. 



On the surface of gelatine they 

 very slowly form a yellowish film. 



On agar the growth is dry and 

 yellow. 



They are pathogenic in mice and 

 guinea-pigs. 



They occur in sewage. 



Bacillus candicans (Frankland). 

 —Very short rods and filaments. 



Colonies pure white. 



Inoculated in the depth of gela- 

 tine they form isolated colonies in 

 the track of the needle, and a white 

 button on the free surface. 



On agar they form a greyish 

 layer, and flourish on potato. 



They occur in soil. 



Bacillus capsulatus (Mori). — 

 Oval forms and rods, sometimes 

 encapsuled. Non-motile. Colonies 

 white. 



Inoculated in the depth of gela- 

 tine and agar a nail-shaped growth 



In broth they form a white' 

 turbidity, and a white pellicle 

 develops on the surface and on the- 

 sides of the vessels. 



On potato at 37° C. an abundant 

 moist, yellowish, stringy growth is 

 formed, with production of gas 

 bubbles. They are pathogenic in 

 mice and in rabbits if injected intO' 

 the pleural cavity. 



They occur in drain water. 



Bacillus capsulatus (Pfeiffer).. 

 — Rods singly, in pairs, or in chains 

 and in filaments. They have a well- 

 marked capsule. Colonies white- 

 Inoculated in gelatine they grow 

 in the track of the needle, and 

 form a white button on the free 

 surface. 



On agar and on potato the growth 

 is also white and very viscid, so' 

 that it can be drawn out into long 

 threads. 



They produce a fatal result in 

 mice in two or three days, when 

 inoculated subcutaneously. A 

 minute quantity of a broth culture 

 injected into the peritoneal cavity 

 of guinea-pigs willi prove fatal in 

 thirty-six hours. The bacilli are 

 found in the blood which is made 

 viscid. 



They were isolated from a guinea- 

 pig found dead. 



Bacillus capsulatus mucosus 

 (Fasching). — Rods 3 to 4 /u. in 

 length, '75 to 1 (x in width ; capsu- 

 lated. Colonies white. 



Cultures in gelatine resemble 

 Friedlander's pneumococcus. 



They form gas. 



They produce a fatal result in 

 mice in thirty-six hours. 



They were isolated from nasal 

 mucus in cases of influenza. 



Bacillus capsulatus suis: 

 (Smith).— Rods from 1-2 to 1-8 ja 

 in length and '8 to '9 jj, in width. 

 There are three varieties of this 

 bacillus having a close resemblance to 

 the pneumococcus of Friedlander. 



They were isolated from the in- 

 testines of swine. 



Bacillus carabiformis (Kac- 

 zynsky). — Rods short and slender- 

 Colonies develop characteristic 

 processes. 



