256 IMPORTANT VARIETIES OF FISSION-FUNGI. 



Bacterium Guillebeau, a and b, v. Freudenreich. (See C. B. 

 XVII, 487. ) The organisms, described in the Annal. de micrographie, 

 which is inaccessible to us, produce simultaneously fermentation of 

 milk (inflation of cheese) and inflammation of the udder. 



Bacterium of white or yellow calf dysentery. There is not much 

 to be gained by reference to the works of Piana, Mazzanti e Vigerzi, 

 Monti e Veratti (C. B. XVIII, 653). 



Bacterium icteroides. (Sanarelli.) Heim. 



Synonyms. — Bacillus icteroides Sanarelli, Bacillus of 

 yellow fever (febris icteroides; Spanish, febre amarilla). 



Literature.— Sanarelli (A. P., 1897; C. B. xxn, 181 and 668). 

 The more recent volumes of the C. B. contain many confirmations of 

 Sanarelli's findings by American clinicians and some European authors. 

 Sternberg (C. B. xxn, 145; xxiii, 829; xxiv, 376; xxv, 655). 



Regarding the contention whether Sternberg's Bacillus 

 X is the same as the Bacterium icteroides, as Sternberg 

 maintains, we will only say that Sternberg's Bac. X is a 

 typical Bact. coli; the Bact. icteroides resembles more the 

 Bact. typhi. 



Sanarelli accepts as the cause of yellow fever a short 

 bacillus, characterized by no special diagnostic peculiarity. 

 It is extraordinarily like the Bact. typhi and many cul- 

 tures of Bact. coli. 



Microscopic. — Short, motile rods with peritrichous 

 flagella, not staining by Gram's method. 



In the description of the gelatin l and agar culture, noth- 

 ing is found different from a delicately growing Bact. coli 

 or Bact. typhi. Single peculiarities accentuated by Sana- 

 relli are scarcely constant (compare Agramonte); thus, for 

 example, in agar cultures at room temperature there is 

 shown an elevated ring about a thinner growth (seal cul- 

 ture). The potato cultures resemble typhoid, being 

 delicate, colorless, but, according to Agramonte, they be- 

 come partly brownish later. Milk is not coagulated. In 

 milk-sugar bouillon, no or very little gas is produced. 

 On the contrary, in grape-sugar bouillon it is produced 

 abundantly, but none is formed in cane-sugar bouillon. 

 It is a facultative anaerobe. 



1 Cultures which we obtained from Krai present moderate liquefac- 

 tion of gelatin and no spontaneous motion, but otherwise corresponded 

 very well to the descriptions given in the text. 



