BACILLI 44 S 



'WEISSEE BACILLUS' (Tataroff) 



Authority.— Tataroff, Die Doijyater Wasserhacterien, Dorpat, 1891, p. 35. 



"Where Found.— In well-water from Dorpat. This bacillus differs from 

 Bacillus alhiis inasmuch as it has rounded ends and is not motile. It re- 

 sembles in nearly all respects {Tataroff, loc. cit, p. 37) the Bacillus candicans 

 obtained from soil and described by Percy and G. C. Frankland, Zeitschrift 

 filr Hygiene, vol. vi. p. 397. 



Microscopic Appearance.— Slender double bacillus, nearly 1-5 ^ long, with 

 rounded ends. In stained preparations the small bacilli look short and oval. 

 In broth threads are formed. It is not motile. 



Cultures. — 



Gelatine Plates. — White pin-head colonies, resembling bits of shining 

 porcelain. Under a low power the depth colonies are either round or oval, 

 faintly brown in colour, and with granular contents. The surface colonies are 

 brown white with a touch of yellow, shining, circular, with sharp contour, 

 although occasionally deep indentations are seen. No liquefaction takes place. 



Gelatine Tubes. — Produces a, shining somewhat thick porcelain-white 

 expansion. Later the colour becomes grey white, and the gelatine is cleft by 

 bubbles of gas. In the depth it produces a sword-hke streak, 



Agab-agah. — Shining, milk-white, moist and shiny expansion, and a white 

 deposit collects in the condensed water. 



Glycbrine-agar.— Luxuriant and shining white growth covering the whole 

 surface. Later it becomes greyish, and finally of a dirty white colour tinged 

 with yellow. 



Blood Serum. — White slimy and moist expansion. 



Broth. — Benders it very turbid, producing a ' considerable amount of 

 brownish white deposit. 



Potatoes.— Forms a moist, shining, brown white expansion which does not 

 extend very far from the point of inoculation. 



BACILLUS ALBUS (' Weisser Bacillus ' ) 



Authority. — Eisenberg, Bakteriologische Diagnostik, 1891, p. 171. 



"Where Found. — In water. This is doubtless the same organism as that 

 found in water and described as ' Der weisse Bacillus ' by Maschek (see p. 480). 



Microscopic Appearance. — Short bacillus with blunted ends; often several 

 are seen joining on end to end. It is motile. 



Cultures. — 



Gelatine Plates. — Bound white pin-head colonies. No liquefaction of the 

 gelatine takes place. 



Gelatine Tubes. — Grows slowly, producing a whitish streak in the depth 

 and forming a white pin-head on the surface as on the plates. 



Agar-agar. — Produces a milk-white expansion. 



Potatoes. — Forms a dirty yellow white growth restricted to the point of 

 inoculation. 



Semarks. — It will not grow at higlier temperatures. 



