508 



shown by Smith and Welch, is identical with the bacillus of American hog 

 cholera." 



BACILLUS OF BELFANTI AND PASCAROLA. 



Synonym. Impftetanusbacillus. 



Obtained by Belfanti and Pascarola (1888) from the pus of wounds in an 

 individual who succumbed to tetanus. 



Morphology. Bacilli with rounded ends, sometimes so short as to resemble 

 micrococci; resemble the Bacillus septicaemias haemorrhagicae (fowl cholera). 



Stains with the usual aniline colors and also by Gram's method. The 

 ends are commonly more deeply stained than the central portion. 



Biological Characters. An aerobic and facultative anaerobic, non- 

 liquefying, non-motile bacillus. Spore formation not observed. Grows in 

 the usual culture media at the room temperature. Upon gelatin plates yel- 

 lowish-gray, finely granular, spherical colonies with smooth outlines are 

 developed. In gelatin stab cultures, at 18 to 25 C., at the end of twenty- 

 four hours small, spherical colonies are developed along 1 the line of punc- 

 ture, which are isolated or closely crowded; upon the surface a rather thin, 

 shining, grayish- white, iridescent, circular layer is formed ; gas is given off 

 which has not a disagreeable odor. Upon the surface of agar elevated, 

 shining, gray colonies develop along the impfstrich, or a gray, shining band 

 is formed which increases in thickness but not in breadth usually less than 

 one-half centimetre broad. Old cultures give off an acid odor. Upon blood 

 serum a thin, white layer is developed along the line of inoculation. Upon 

 potato a thin, white, varnish-like layer is formed. 



Pathogenesis. Very pathogenic for rabbits, guinea-pigs, white mice, and 

 sparrows. Not pathogenic for chickens, pigeons, or geese. 



BACILLUS OF SWINE PLAGUE, MARSEILLES. 



Synonyms. Bacillus der Schweineseuche, Marseilles (Rietsch 

 and Jobert) ; Bacillus der Frettchenseuche ferret disease (Eberth 

 and Schimmelbusch) ; Bacillus der Amerikanischen Kinderseuche 

 (Caneva) ; Bacillus of spontaneous rabbit septicaemia (Eberth). 



The researches of Caneva and of Bunzl-Federn agree as to the 

 identity of the bacillus obtained by Rietsch and Jobert (1887) from 

 swine attacked with a fatal epidemic disease in Marseilles, and the 

 bacillus found by Eberth and Schimmelbusch (1889) in the blood of 

 ferrets suffering from a fatal form of septicaBmia studied by them. 

 The first-named bacteriologist also identifies a bacillus supposed 

 by Billings to be the cause of " Texas fever " in cattle (" Ameri- 

 kanische Rinderseuche ") and the bacillus of swine plague (Billings) 

 with the above. Bunzl-Federn obtained cultures of Billings 7 swine- 

 plague bacillus at two different times. He identifies the one first re- 

 ceived with the bacillus now under consideration, and the other with 

 the bacillus of hog cholera (Salmon). 1 



1 The author named says: '-With reference to the bacillus of swine plague 

 (Billings), I obtained, as did Caneva, a decided production of acid in the cultures 

 first sent by Billings ; but upon testing later cultures received directly from Bil- 



