ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 709 



by Marchoux and Salimbeni, is not confined to the vascular system, but 

 invades the glandular tissues and enters into contact with the various 

 cellular elements, though it does not appear to penetrate the protoplasm 

 of the cells. The crisis that terminates the spirillar infection is caused 

 by the phagocytosis of the spirilla by the macrophages of the spleen and 

 liver. The authors rind that this spirillum is able to infect the ovule of 

 the animal. 



Microbe of Whooping-Cough.* — J. Bordet and 0. Gengou, by 

 means of their special blood agar medium,f have isolated from the 

 expectoration of early cases of whooping cough a small ovoid bacillus, 

 much resembling the influenza bacillus, staining more deeply at the 

 contour and at the ends, and not staining by Gram's method. The 

 organism is unlike B. influenza, in its inability to develop on the ordinary 

 media, and has a much less tendency to produce involution forms. 

 Serum tests served to demonstrate the specific nature of the bacillus, 

 and to confirm it as the causative element of whooping-cough. 



Experimental Production of Transmissible Varieties of B. tuber- 

 culosis and of Antituberculous Vaccine. % — S. Arloing, after referring 

 to his previous experiments by which he succeeded in establishing by a 

 process of selection, a constant strain of human B. tuberculosis of lowered 

 virulence, notes that by sub-culturing this organism in broth at gradually 

 increasing temperatures, he was able to obtain a constant variety of 

 B. tuberculosis that grew at 43°-44° C, and possessed a markedly 

 lowered pathogenicity, and he employed this organism successfully for 

 antituberculous vaccination. 



Fibrillar Structure of Bacteriaceae.§— J. Kunstler and C. Gineste 

 find that, besides the vesicular elements of the parenchyma and the 

 longitudinal striation of the tegument, which are doubtless of a special 

 fibrillar nature, there is observable in the parenchyma of Bacteriacese 

 certain characteristic figures that suggest a possible fibrillar constitution. 

 From observations on Spirillum periplaneticum (a spirillum parasitic on 

 Periplaneta americuna), the authors noted the fundamental arrangement 

 of these figures, the aspect of which differed with the age of the 

 individual and with the optical plane studied, the general appearance 

 being that of a trabecular network traversing the parenchyma of the cell. 



Spirochaetae of Balanitis and of the Mouth.|| — E. Hoffmann and 

 8. v. Prowazek find that the so-called flagella of Spirochceta pallida 

 Schaudinn occurs also with other varieties of Spirochsetae — e. g., those 

 of balanitis and of the mouth. The structure is not of the nature of a 

 bacterial flagellum, but is, as is well demonstrated in Spiroclmta buccal is. 

 a continuation of the cell-protoplasm (periplast). 



Morphology of Vibrio cholerse asiaticse.^f — H. Hammerl, referring 

 to the various forms the Vibrio cholera assumes under different sur- 

 rounding conditions, considers that the appearances are to be regarded 



* Ann. Inst. Pasteur, xx. (1906) p. 731. 



+ See this Journal, 1906, p. 727. 



X Comptes Rendus, cxlii. (1906) p. 1395. § Op. cit., clxiii. (1906; p. 84. 



|| Ceutralbl. Bakt., l*e Abt. Orig., xli. (1906) p. 817. 



«j[ Op. cit , xlii. (1906) p. 1. 



