FAMILY LACTOBACTERIACEAE 



317 



from arabinose, trehalose, raffinose, in- 

 ulin, glycerol or mannitol. 



Does not hydrolyze sodium hippurate, 

 but starch and esculin may be split. 



Ammonia is produced from peptone. 



Temperature relations : Xo growth at 

 10°C or at 4o°C. Does not survive 60°C 

 for 30 minutes. 



Chemical tolerance : Tolerates 2 per 

 cent XaCl but not 4 per cent and 6.5 

 per cent. Final pH in glucose broth 

 4.5 to 5.2. Xo growth at pH 9.6. Meth- 

 ylene blue 0.01 per cent and 0.1 per cent 

 not tolerated and not reduced. 



Action on blood: Beta hemolysis. 



Serology: Group C of Lancefield (loc. 

 cit.). Cross precipitation with Strepto- 

 coccus equi. 



Facultative anaerobe. 



Source: Blood stream, inflammatory 

 e.xudates and lesions of diseased animals. 

 Xot known from man. 



Habitat : Disease process of domestic 

 and laboratory animals. (Horse: endo- 

 metritis, foetus. Hog: septicemia. 

 Cow: septicemia, metritis, foetus. 

 Fowls : slipped tendon. Guinea pig: 

 IjTnphadenitis. Rabbit: septicemia. 

 Fox : pneumonia.) 



3. Streptococcus equi Sand and Jensen. 

 {Bacillus adenitis equi Baruchello, Soc. 

 Veter. de Venetie, Undine, 1886; Giornale 

 di anatomia fisiologica et patologia degli 

 animali domestici, Pisa, Sept., 1887 ; Sand 

 and Jensen, Deuts. Ztschr. f. Tiermed., 



13, 1888, 436, dated December 27, 1887, 

 Veterinary Congress, Copenhagen, 1887; 

 sometimes incorrectly credited to Schtitz, 

 Arch. f. wissens. u. prakt. Tierheilkunde, 



14, 1888, 172; Streptococcus cappelletti 

 Chester, Manual Determ. Bact., 1901, 57 ; 

 Streptococcus coryzae contagiosae equorum 

 Schiitz, in Eisenberg, Bakt. Diag., 3 

 Aufl., 1891, 270; Streptococcus schiitz, 

 Bongert, in Kolle and Wassermann, 

 Handb. d. path. Mikroorg., 2 Aufl., 6, 

 ■^913,208.) From Latin equus, horse. 



Possible synonyms : Streptococcus peri- 

 ionitidis equi Hamburger, Cent. f. Bakt., 

 I Abt., 19, 1896, 882 {Streptococcus peri- 



tonUidis Migula, Syst. d. Bakt., 2, 1900, 

 21 ) ; Streptococcus pyogenes equi Hutyra, 

 in Lehmann and Xeumann, Bakt. Diag., 

 7 Aufl., 1927,221. 



Xote: Rivolta (Dei parassiti vegetali 

 come introduzione alio studio delle malat- 

 tie parassitarie e delle alterazione dell' 

 alimento degli animali domestici. Turin, 

 1873, 161 ) described chains of cocci in ade- 

 nitis scrophula equorum, morbus glandu- 

 losus. 



Holth, reported by C. O. Jensen 

 (Handb. d. Serumtherapie u. Serum diag- 

 nostik in d. Veterinar-med. (Klimmer- 

 Wolff-Eisner) , 2, 1911 , 223 j , and Adsersen 

 (Cent. f. Bakt., I Abt., Orig., 76, 1915, 

 111 ) studied the fermentation reactions of 

 Sand and Jensen's organism. Review of 

 early literature given by Brocq-Rousseau, 

 Forgeot and Urbain (Le streptocoque 

 gourmeu.x. Revue de Pathologic Com- 

 paree et d'Hygiene Generale, Paris, 

 1925). 



Ovoid or spherical cells : 0.6 to 1 micron 

 in diameter, sometimes in pus the long 

 axis of the cells are transverse to the 

 chain, and sometimes in the axis of the 

 chain resembling streptobacilli ; bacillary 

 forms are not rare; occur in pairs, short 

 or long chains ; very long chains common 

 in broth cultures. Capsules often 

 marked in blood of infected mouse and 

 when grown in serum. Gram-positive. 



Gelatin stab: Growth uncertain. X'o 

 liquefaction. 



Xutrient agar : Primary aerobic cul- 

 tures from pus occasionally fail ; growth is 

 poor; small, convex, transparent colonies. 

 Confluent growth is thin, grayish-white or 

 yellowish and more abundant in the con- 

 densation water. Growth is increased 

 particularly bj' horse protein. 



Broth : Poor growth even in infusion 

 broth ; growth increased by serum 

 (Evans, Jour. Bact., 32, 1936, 541). 



Litmus milk : Xo change. Xot curdled 

 and litmus not reduced. 



Acid from glucose, maltose, sucrose 

 and salicin. Xo acid from arabinose, lac- 

 tose, trehalose, raffinose, inulin, glycerol, 

 mannitol or sorbitol. 



