534 



DESCRIPTION OF SPECIES. 



phosphorescence is most marked in 

 cultures containing an excess of 

 salt. 



They were isolated from a phos- 

 phorescent herring. 



Bacillus smaragdinus foetidus 

 (Reimann). — Slender rods slightly 

 bent. 



Colonies on agar irregular, with 

 a yellowish granular nucleus, and 

 transparent marginal zone. 



The bacilli inoculated in the 

 depth of gelatine produce a growth 

 in the track of the needle, and 

 liquefaction at its upper part, 

 and a greenish coloration. 



In the depth of agar the medium 

 is coloured green. 



On potato the growth is brown. 

 Cultures emit a strong odour. 



Intravenous injection produces 

 death in rabbits in forty-eight 

 hours. 



They were isolated from nasal 

 mucus in ozaena. 



Bacillus solidus (LMeritz).— 

 Bods 1 to 10 fi in length, '6 fi in 

 width. 



They are anaerobic. Cultivated in 

 grape-sugar gelatine they produce 

 gas bubbles and a penetrating foul 

 odour. The colonies are spherical, 

 and in agar under a low power 

 are seen to be composed of fine 

 filaments like cotton wool. 



In broth with exclusion of oxygen 

 they produce a copious growth with 

 abundant formation of foetid gas. 

 They were isolated from earth. 

 Bacillus spiniferus (Unna). — 

 Kods sometimes curved, 2 ;x in 

 length, "8 to 1 /i in width, singly, 

 in pairs, and masses. 



Colonies have peculiar spines, and 

 later a radiated marginal zone. 



In the depth of gelatine minute, 

 yellowish, isolated colonies develop 

 in the track of the needle, and a 

 furrowed, yellowish-grey patch on 

 the free surface. 



On agar the same yellowish 

 wrinkled growth appears. 



On potato they form a shining, 

 faintly-yellow layer. 



They were isolated from the skin 

 in eczema. 



Bacillus spiuosus (Luderitz).— 



Rods sometimes bent, 3 to 8 ;x in 

 length, '6 yu in width, and long 

 filaments. Spore-formation present. 

 They are anaerobic. 



Colonies are composed of fine 

 radiating filaments, and liquefy the 



jelly- 

 In agar the growth is composed 

 of colonies of matted filaments, 

 and there is gas-formation. 

 They liquefy blood serum. 

 They occur in earth. 

 Bacillus stolouatus (Adametz).- 

 — Rods motile. 



Colonies on gelatine, circular, 

 granular, and whitish, or yeUowish- 

 brown. Colonies on agar send ofE 

 peculiar wavy processes. 



Inoculated in the depth of gela- 

 tine a granular filament develops in 

 the track of the needle, and a white 

 patch on the free surface ; later the 

 gelatine is excavated in the upper 

 part, and the culture lines the 

 cavity. 



On potato the growth is whitish. 

 They occur in water. 

 Bacillus stoloniferus (Pohl).— 

 Rods 1'2 fi in length, 8 /j. in width. 

 Motile. 



Inoculated in the depth of gela- 

 tine they produce rapid liquefaction 

 in the track of the needle. 



On the surface of agar they form 

 a white growth. 



On potato they grow abundantly, 

 but scarcely at all in milk. 



They occur in the water of 

 marshes. 



Bacillus striatus albus (Bes- 

 ser). — Bods sometimes bent. 



Colonies on gelatine appear as 

 minute dry points. 



On agar the colonies have a brown 

 nucleus and clear marginal zone. 



On the surface of agar the bacilli 

 produce a greyish- wbite thin layer. 

 On potato the growth is trans- 

 parent and slightly gelatinous. 

 They occur in nasal mucus. 

 Bacillus striatus flavus (Bes- 

 ser). — Short rods, straight or 

 curved ; involution forms. 

 Colonies granular, yellowish. 

 On the surface of agar they pro- 

 duce a white growth, which later 

 becomes sulphur yellow. 



