508 BACILLI WHICH PRODUCE SEPTIC ZMIA 
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 septiczeemize haeemorrhagice (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 aérobic and facultative anaérobic, 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 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 acidodor. 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 Rinderseuche 
(Caneva); Bacillus of spontaneous rabbit septicemia (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 septicaemia 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’ 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).! 
1The 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- 
