L 



ACTINOMYCETEAE 713 



growth is similar to that on agar, with no pigmentation of the medium. In 

 broth, containing egg yolk, there appear whitish grannies on the walls and 

 at the bottom, the medium remaining clear. Granules measure 0.5 x 4.5-9/a, 

 sometimes 1 x 18-20/a in the swollen portions. 



Actinomyces Thjoettae Dodge, n. sp. 



Cohnistreptothrix sp. Thj0tta & Gundersen, Jour. Bact. 10: 1-12, 9 figs., 

 1925. 



Found in a case of generalized infection with acute rheumatism, pleuritis, 

 pericarditis, and bronchitis. Thought by authors to be a saprophyte close to 

 that of Lohlein. Nonpathogenic to laboratory animals. 



On veal broth medium, colonies as described below, hyphae nonseptate, 

 showing no clubs and no spores in bottom growth. In surface growth hyphae 

 slender or thick, twisted, breaking up into ovoid spores. Generally gram- 

 positive. 



On lactose agar, growth rapid, producing smooth, shining, circular, ef- 

 florescent adherent colonies after a few days. Surface growth on agar gram- 

 positive, coccoid forms occasionally gram-negative. Hyphae obserA^ed. When 

 10 c.c. of the patient's blood is added to veal broth to which has also been 

 added 0.2 gm. secondary sodium phosphate instead of NaCl, with a pH 7.8, 

 and this incubated at 37° C. for two weeks, there is a growth of small, woolly 

 colonies on layer of blood at the bottom; surface colonies dry and scaly with 

 the medium clear. In broth, the optimum pH is 7.4. Coagulated ox serum 

 not liquefied. Gelatin rapidly liquefied. 



Actinomyces necrophorus (Fliigge) Lehmann & Neumann, Bakt. Diag. 

 ed. 2, 2. 



Bacillus necrophorus Fliigge, Die Mikroorganismen 265, 1886. 



Sirepioihrix necropJwra Ernst, Monatsh. Prakt. Tierheilk. 14; 193-228, 

 1902. 



Isolated from calf diphtheria. 



Hyphae 100/x long, gram-positive, anaerobic. 



In gelatin and agar, fine, white to yellow spherical colonies, center opaque, 

 margin showing filaments, no surface growth. In coagulated horse or ox 

 serum, colonies reddish or brownish red. In milk, odor of stinking cheese. No 

 growth in broth, etc. Pathogenic to experimental animals. 



Actinomyces Foersteri (Cohn) Gasperini, Centralbl. Bakt. 15: 684, 1894. 



Streptothrix Foersteri Cohn, Beitr. Biol. Pflanzen 1: 186, 1874, non 

 Gasperini, 1890. 



Cladothrix Foersteri Winter, in Rabenhorst Kryptogfl. Deutschl. ed. 2, 1 : 

 60, 1884. 



Cladothrix dichotoma Mace, Traite Pratique Bact., 1888. 



Nocardia Forsteri Trevisan, in Sacc. Syll. Fung. 8: 928, 1889. 



