600 



MANUAL OF DETERMINATIVE BACTERIOLOGY 



B. Do not produce pink or red chromogenesis. 



1. Motile. 



a. Produce clouding in alginic acid liquid medium, 

 b. From sea water. 



51. Baclerinm alf/inicum. 

 bb. From soil. 



52. Bacterium terrestrnhiinicum. 

 aa. Action on alginic acid unknown. 



b. Causes a disease of swans. 



53. Bacterium cijqni. 



2. Non -motile. 



a. Causes red spot disease of carp. 



54. Bacterium ci/prinicida. 



aa. Causes liberation of ammonia from a mixture of horse manure and 

 urine. 



55. Bacterium, parvulum. 



aaa. Utilizes formates in a litiuid medium with the formation of a red- 

 dish pellicle. 



56. Bacterium methylicum. 



Appendix I: Miscellaneous described species of non-spore-forming bacteria 

 placed by their authors in the genus Bacillus. See p. 64.3. 



Appendix II: Includes anaerobic bacteria that produce methane. See p. 645. 



Appendix III: Miscellaneous species of non-spore-forming bacteria listed 

 but not described. See p. 647. 



1 . Bacterium erythrogenes Lehmann 

 and Neumann. (Bacterium lactis ery- 

 throgenes Grotenfelt, Fortschr. d. Med., 

 7, 1889, 41; Bacillus lactis erythrogenes 

 Sternberg, Manual of Bact., 1893, 636; 

 Lehmann and Neumann, Bakt. Diag., 

 1 Aufl., 2, 1896, 253; Bacillus erythrogenes 

 Matzu.schita, Bakt. Diagnostik, 1902, 

 220; Corynebacterium erythrogenes Kiss- 

 kalt and Berend, Cent. f. Bakt., I Abt., 

 Orig., 81, 1918, 446; Erythrobacillus 

 erythrogenes Holland, Jour. Bact., 5, 

 1920, 218; Erythrobacillus (lactis) ery- 

 throgenes Holland, ibid.; Serratia lactica 

 Bergey et al., :\Ianual, 1st ed., 1923, 93; 

 Chromobacterium lactis erythrogenes Top- 

 ley and Wilson, Princip. Bact. and Im- 

 mun., 1, 1931, 402.) From Greek, red- 

 producing. 



Micrococcus Lactis erythrogenes Conn, 

 Esten and Stocking, Ann. Rept. Storrs 

 (Conn.) Agr. E.xp. Sta., 18, 1906, 117 is 

 stated to be allied to if not identical witli 

 the above species. 



Reds: 0.3 to 0.5 by 1.0 to 1.4 microns, 

 in broth often up to 4.3 microns long, 



occurring singly, and having rounded 

 ends. Non-motile. Stain with the 

 usual aniline dyes. Gram-positive (Leh- 

 mann and Neumann, loc. cit.). 



Gelatin colonies: Small, circular, gray- 

 ish, becoming yellow, sinking into the 

 medium. Crateriform liquefaction. 

 Yellow sediment. Medium becomes 

 rose-colored. 



Gelatin stab : Surface growth a whitish, 

 later yellow, circular, thin layer. Weak 

 growth in stab. Slow liquefaction at the 

 surface, the liquid becoming red, with 

 yellow sediment. The solid portion as- 

 sumes a weak rose color. 



Agar stab: Moist, fairly luxuriant, 

 yellow growth, the medium assuming a 

 rose to wine color. 



Broth: Turbid, yellow. Pellicle (Ful- 

 ler and Johnson, Jour. Exp. Med., 4, 1899, 

 609). 



Litmus milk: Acid. Slow coagulation, 

 htiving a clear fluid which becomes blood- 

 red in color. Reaction becomes alkaline. 



Sterile milk: Casein slowly precipi- 

 tated, later peptonized. Reaction neu- 



