272 IMPORTANT VARIETIES OF FISSION-FUNGI. 



Bacterium chrysogloea. Zopf.i 



According to Zimmermann's description (ii, p. 12), it is 

 only distinguished from the preceding by active motility. 

 ^^^e found in gastric contents an exactly corresponding 

 form with peritrichous fiagella and active motility, which 

 stained by Gram's method. Chrysoglcea and fulvum may 

 be related, as Forma mobilis and immobilis. Proof is still 

 wanting. 



Bacterium latericium. (Adametz.) Lehm. and 

 Neum. 



(Plate 20, l-vi.) 



Short rods, somewhat pointed at both ends (0.8-1.6 /i long, 0.4-0.6 

 fi thick), non-motile, and stained by Gram's method. Upon the gel- 

 atin plate the deep colonies appear as roundish, reddish-bro"wn, opaque 

 disks with smooth edges. The deep ones are jagged, sinuous, trans- 

 parent at the edge, very crumbly, and reddish (20, III). In the gel- 

 atin stab no liquefaction occurs, the surface growth is from vermilion 

 to reddish-brown (20, li). The growth upon the agar streak is the 

 same (20, l). The growth upon the agar plate is not especially char- 

 acteristic; round disks, coarsely crumbly, border granular, and in the 

 deep ones smooth (20, v). ijpon potato the bacterium grows very 

 slowly only and very scantily (20, iv). Bouillon, remains clear. Milk 

 is not coagulated. Neither gas nor acid is formed from sugar. No 

 HjS, and only traces of indol are formed. Isolated by us from the air; 

 corresponds, so far as can be judged from Eisenberg, with 'the descrip- 

 tion of Adametz. The organism does not belong here, according to its 

 natural relationship, but more properly ^vith the Bact. acidi lactici. 



Catiano has described two other bacilli, which are motile, beauti- 

 fully pro\-ided with fiagella, produce red pigment, and do not possess 

 spores: Bac. rubiginosus and coccineus (Cohn's Beitr., Bd. VII, 

 1896, H. Ill, 537). We could not study these. 



Bacterium prodigiosum. (Ehrenberg.) Lehm. and 

 Neum. 



(Plates 21 and 22. «) 



Synonyms. — Monas prodigiosa Ehrenberg, Micrococ- 

 cus prodigiosus Cohn, Bacillus prodigiosus Fliigge. 



^ Mignla places Bact. chrysoglcea with the non-motile varieties, 

 and designates Bact. aureum Frankland, Bact. aurescens Frank- 

 land, and Bact. egregium Zopf as closely related. 



' The plate drawn for Bact. kUieuse has forms which also occur 



