X] 



BACILLI : SPECIAL 



199 



the proteus Zenker! ; from this latter it differs in ahriost all 

 other respects, our bacillus being more cylindrical, not 

 motile, and its colonies on gelatine being filmy, translucent, 

 granuliir patches. 



Another bacillus which I found occasionally, but rarely, in 

 sewage, and which I ha\-e not found elsewhere, is a bacillus 

 which on account of its eminent tendency to form long 



r 



Fig 64. — Strei'tothrik Foersteri 

 (after Cohn). 



Fig. 65, — Cladothrix Dichotoma 

 (after Cohn). 



threads I have called bacillus filamentosus ; this is a 

 strongly aerobic, non-motile microbe, consisting of cylindrical 

 bacilli with square ends like bacillus anthracis ; in stab and 

 streak it forms a marked feathery, filamentous growth ; it 

 licpiefies gelatine very rapidly, the liquefied gelatine being 

 quite limpid, and it rapidly forms bright, glistening, oval 

 spores in size, shape, and position the same as bacillus 

 anthracis 



