muelleri of Schottmuller; named for Prof. H. Schottmiiller, who isolated this organism in 1899. Rods, 0.6 to 0.7 by 2.0 to 3.0 microns, occurring singly and in pairs. Usually motile by means of peritrichous flagella. Gram- negative. Gelatin stab: No liquefaction. Agar colonies: Small, circular, bluish gray, transparent, homogeneous, entire to undulate. Broth: Turbid; thin, gray pellicle and sediment. Fecal odor. Litmus milk: Slightly acid, becoming alkaline. Potato: Grayish white, viscous growth. Indole not produced. Hydrogen sulfide is produced. Acid and gas from glucose, mannitol, maltose, sorbitol, arabinose, xylose and trehalose. Mucate and 1-tartrate are at- tacked. Fermentation of dulcitol, inositol, rhamnose and dl-tartrate is variable. No action on lactose, sucrose, salicin, adonitol or d-tartrate. Sodium citrate may or may not be uti- lized. Nitrites produced from nitrates. Trimethylamine produced fromtrimethyl- amine oxide (Wood and Baird, Jour. Fish. Res. Board Canada, 6, 1943, 198). Aerobic, facultatively anaerobic. Optimum temperature, 37° C. Antigenic structure: 1, 4, 5, 12: b: 1, 2. Source: Isolated from cases of enteric fever in man. Not a natural pathogen of other animals. Habitat: A natural pathogen of man causing enteric fever. Also found rarely in cattle, sheep, swine, lower primates and chickens. 8. Salmonella abortivoequina (Good and Corbett, 1916) Bergey et al., 1923. (Ba- cillus abortivus equinus Good and Corbett, Jour. Inf. Dis., 13, 1913, 53; Bacillus abortus equi Meyer and Boerner, Jour. Med. Res., 29, 1913, 330; Bacillus aborfivo-equimcs Good and Corbett, Jour. Inf. Dis., 18, 1916, 586; Bacillus abortus equinus Weiss and Rice, Jour. Med. Res., 35, 1917, 403; Bacillus abortivus Winslow, Kligler and Rothberg, Jour. Bact., 4, 1919, 477; Bergey et al.. Man- ual, 1st ed., 1923, 217; Salmonella abortus= equi Bergey et al.. Manual, 2nd ed., 1925, 236.) a.bor.ti.vo.e.qui'na. L. adj. abortivus pertaining to abortion; L. adj. equinus per- taining to horses; M.L. adj. abortivoequinus pertaining to aborting horses. Rods, 0.2 to 0.5 by 1.5 microns, occurring singly, occasionally in pairs. Motile by means of peritrichous flagella. Gram-nega- tive. Gelatin: No liquefaction. Indole not produced. Hydrogen sulfide not produced. Acid and gas from glucose, mannitol, maltose, sorbitol, xylose, arabinose and rhamnose. 1-Tartrate and dl-tartrate are attacked. Fermentation of dulcitol and trehalose is variable. 1-Tartrate may or may not show late fermentation. No action on lactose, sucrose, salicin, adonitol, inositol or mucate. Sodium citrate is utilized. Nitrites produced from nitrates. Trimethylamine produced from trimethyl- amine oxide (Wood and Baird, Jour. Fish. Res. Board Canada, 6, 1943, 198). Antigenic structure: 4, 12: — , e, n, x. Isolated from the afterbirth of mares that had aborted. Habitat: A natural pathogen of mares, causing abortion; also infectious for guinea pigs, rabbits, goats and cows, producing abortion. 9. Salmonella abortusovis (Lovell, 1931) Schiitze et al., 1934. {Bacillus para- typhi abortus ovis Schermer and Ehrlich, Cent. f. Bakt., I Abt., Ref., 73, 1922, 252; Bacterium abortus ovis Lovell, Jour. Path, and Bact., 34, 1931, 13; Schutze, Jordan, Kauffmann, Scott, White and St. John- Brooks, Jour, of Hyg., 34, 1934, 340.) a.bor.tus.o'vis. L. noun abortus abortion; L. gen. noun abortus of abortion; L. noun ovis a sheep; L. gen. noun ovis of a sheep; M.L. gen. noun abortusovis of abortion of a sheep. Rods, 0.6 by 3.0 to 4.0 microns, occurring singly. Usually motile by means of peri- trichous flagella. Gram-negative. Gelatin: No liquefaction. Indole not produced.
