524 PATHOGENIC BACTERIA. 



material exchange of this hyphomycete or the transfor- 

 mation effected by it, are sufficient to nourish the ba- 

 cillus and enable it to live and multiply, whereas it 

 would be otherwise condemned to a more or less early 

 death. 



There seems to be no particular mould possessed of this 

 power, as of six experimented upon all were capable of 

 it. Sanarelli is of the opinion that in the holds of .ships 

 and in damp places generally the presence of moulds 

 favors the development of the Bacillus icteroides. 



About the same time that Sanarelli published his 

 researches, Havelburg announced l the discovery of an 

 entirely different bacillus. Without entering into a de- 

 scription of Havelburg' s bacillus, which seems to be far 

 from established in importance, it may be classified as an 

 interesting member of the colon group of bacilli. 



In a lengthy and interesting review and comparison of 

 Sanarelli's and his own work, Sternberg 2 concludes that 

 the Bacillus icteroides of Sanarelli is identical with the 

 Bacillus x, which he had discovered in yellow fever 

 cadavers as early as 1888. 



In a later paper 3 Sanarelli discusses the validity of 

 Sternberg's claim to priority of discovery, and points out 

 a sufficient number of differences in the original descrip- 

 tions of the organisms to establish conclusively the in- 

 dividuality of the Bacillus icteroides. 



It would seem, from a careful consideration of the 

 recent literature, that Havelburg had very little ground 

 for considering his bacillus specific, and that it is not 

 possible for Sternberg to establish the identity of the 

 Bacillus x with the Bacillus icteroides, while at the same 

 time Sanarelli's descriptions and arguments are convinc- 

 ingly in favor of the accuracy of his own work and the 

 specificity of his bacillus. 



Sanarelli's labors have not ceased with his careful study 

 of the Bacillus icteroides, but have been carried into the 



1 Ann. de r Inst. Pasteur, 1897. 



2 Centra/6/, filr Bakt. und Parasitenk., Sept. 6, 1897, Bd. xxii., Nos. 6 

 and 7. 3 Ibid., Bd. xxii., Nos. 22 and 23, p. 668. 



