GENERAL SYSTEMATIC BACTERIOLOGY 497 



Conidien." He has been followed by Chester (1899, p. 64). Hewlett 

 (1898) groups all thread bacteria under Streptothrix. Berestnew (1899, 

 p. 390) rejected the name as invalid. Chester (1901, p. 360) uses the 

 following definition: 



Cells in their ordinary form as long branched filaments. Cultures on solid 

 media raised. Growth coherent, dry, rough or crumpled, often with a moldy 

 appearance due to the formation of aerial hyphae. Without endospores, but by 

 a multiple segmentation of a filament, the production of short, gonidia like 

 bodies. 



Lehmann and Neumann (1901, p. 128) definitely discard Strepto- 

 thrix in favor of Actinomyces. 



A. J. Smith (1902, p. 270) and Kendall (1902) agree with Chester. 



Petruschky (1903, 2, 832) includes Actinomyces, Streptothrix, Clado- 

 thrix and Leptothrix as "species" of the Trichomycetes. Streptothrix is 

 used as the generic designation of the organisms causing mycelomata. 



E. F. Smith (1905) rejects the name as invalid for a genus of bacteria. 

 Foulerton (1906, p. 302) according to Musgrave and Clegg (1908, 

 p. 459) uses the name Streptothrix for the following reasons: 



1. He does not consider that Corda's indefinite use of the term in 1883 should 

 make Streptothrix Cohn (1875) untenable. 



2. This being acceptable, Streptothrix becomes the correct botanical name by 

 priority of description. 



3. Streptothrix was adopted by the committee of the Pathological Society. 



4. It is by far the most generally used name. 



Musgrave and Clegg (1908, p. 471) while agreeing that probably 

 Streptothrix Cohn is not tenable, nevertheless adopt it tentatively for 

 lack of a better designation. Jordan (1908) holds Streptothrix to 

 be invalid. Heim (1911) includes Actinomyces under Streptothrix. 

 Petruschky (1913, p. 270) believes that no confusion can arise through 

 the use of Streptothrix to designate two such unlike organisms as the 

 hyphomycete of Corda and the thread bacterium of Cohn. Streptothrix 

 is to be differentiated through its abundant true branching, its ability to 

 fragment into segments, its wavy filaments and its chains of conidia. 



The name Streptothrix is probably invalid as a generic designation 

 among the bacteria. 



Streptovibrio. A name given by Maggi (1886, p. 176) to a growth 

 form of Vibrio in which the cells occur in chains. 



Sulfomonas. A genus of sulphur bacteria proposed by Orla- Jensen 

 (1909, p. 313) to include those forms which are not spiral, autotrophic. 



