VIBRIO PROTEUS. 367 



are present in quantity in the blood and in the edema at 

 the necrotic point of inoculation. 



According to the statements of Gamaleia, cholera vibrios 

 behave similarly toward pigeons, but Pfeiffer could verify 

 this only by using very large quantities of cultures. 

 Weibel (A. H. xxi, 22), Salus (A. H. xix, 342), Wlajeff 

 (C. B. xvn, 619), and others, on the contrary, obtain 

 inoculation results similar to those of Gamaleia with 

 cultures which are originally virulent or rendered so 

 artificially. The possibility of immunizing pigeons with 

 the Vibrio Met. against the Vibrio choleras is advocated 

 from many sources, and denied by R. Pfeiff er, who also 

 finds a reason for considering the Vibrio Met. a separate 

 organism in its refusal to give Pfeiffer's serum reaction. 

 (Seep. 373.) 



Vibrio Proteus. (Finkler and Prior.) Buchner, A. H. 

 iii, 1885, 36i. 



(Plate 52.) 



Vibrio " Finkler and Prior" of authors ; "Finkler." 



Literature. — Finkler and Prior, Erganzungshefte z. Centralblatt f. 

 allg. Ges.-Pflege., Bd. I, 279; Koch (Z. H. xiv, 329). 



Microscopic Appearance. — More or less bent rods; on an average, 

 2Au long and 0.4-0.6/* thick, usually a little thicker than the Vibrio 

 cholerae (51, VI ). 



Gelatin Plates. — With the unaided eye it only differs from the Vibrio 

 cholerae in more rapid liquefaction and in the formation of larger 

 disks (52, in). Magnified sixty times, the colonies are yellow, with 

 almost smooth borders, only slightly and finely granular (colonies of 

 the Vibrio cholerae are coarsely granular with finely pectinate or 

 crumbly borders). The surface colonies usually sink in rapidly and 

 present a darker peripheral zone, sometimes with a row of hairs (52, 

 IV). 



Gelatin Stab Culture. — Tube-shaped liquefaction along the stab, 

 without formation of any air space, and with marked turbidity of the 

 contents (52, I, II ). 



Agar Plate. — A little more luxuriant growth than in the Vibrio 

 cholerae (52, IX ). When magnified sixty times, the colonies look like 

 those of Bact. coli (52, vn and viii). (See also 18, vn; 12, iv.) 



Chemical Activities. — Milk is coagulated, and later again liquefied; 

 faint acid formation; no gas formed from grape-sugar; indol reaction 

 faint and frequently absent; very little H 2 S developed. 



Distribution. — (a) Outside the body : Claimed to have been once found 

 in surface water (Hericourt). 



(6) In body: In the intestinal contents or dejecta of some healthy 



