Differentiated Diseases. 99 



Hemorrhagic septicemia of swans ; observed in the Zoological Gar- 

 den of Milan by Fiorentini in pheasants and Egyptian geese. The 

 bacillus is motile, bouillon is made cloudy and of a yellowish discolora- 

 tion, grows on potato in the form of chocolate-brown colonies; the cul- 

 tures liberate a fetid odor. (Cbl. f. Bakt., 1896, XIX, 932.) 



Exudative septicemia of geese; diagnosed first in Mecklenburg 

 by Riemer, later in Stralsund by Frosch & Birnbaum (the disease 

 described by Bugge as infectious inflammation of the air-sacs of geese 

 is probably identical) . Characteristic lesions ; pronounced sero-fibrinous 

 pericarditis and fibrinous peri-hepatitis. The slender rod-shaped bacil- 

 lus (Bac. septicaemiee anserum exsudativs) which resembles Pfeiffer's 

 influenza bacillus forms threads in cultures, is not motile, does not form 

 spores, decolorizes by Gram, and is strongly pathogenic for geese and 

 less for ducks. (Lit. Cbl. f. Bakt., 1909, LII, 433.) 



Epizootic pneumo-enteritis of turkeys ; described by Dodd, is char- 

 acterized by swelling of the sub-orbital region, emaciation and diarrhea 

 or hepatization and small necrotic nodules in the lungs, as well as 

 fibrinous exudates in the pleural cavity. The causative agent resembles 

 the ovoid cholera bacillus. (J. of Comp. Path., 1905, XVIII, 239.) 



Infectious leukemia of chickens; studied in the United States by 

 Moore; its course extends from 1 to 3 weeks with symptoms of a severe 

 leukemia. The causative agent (Bac. sanguinarium) ; forms yellowish- 

 white colonies on potato. (Bur. Anim. Indus! Rpt. 1895-96, 185). 



Chicken plague; observed by Mazza in northern Italy. In the 

 course of the disease caseous foci develop in the lungs. The bacillus 

 is motile, develops gases in bouillon containing sugar, grows on potato 

 in the form of colorless, lustrous deposits; rabbits are slightly sus- 

 ceptible. (Cbl. f. Bakt., 1899, XXVI, 181.) 



Disease of canary birds; described by Rieck. A soot-like dis- 

 coloration of the skin develops, while the liver contains punctiform 

 necrotic foci. The bacillus is motile and grows on potato in the form 

 of yellowish-gray colonies. (D. Z. f. Tm., 1889, XV, 69.) 



Cholera of canary birds; studied in Budapest by F. Kern. The 

 bacillus does not take bipolar staining, is not motile, develops fetid 

 gases in agar containing sugar, and forms yellowish colonies on potato, 

 the medium showing a bluish discoloration. Chickens and pigeons 

 are not susceptible. (D. Z. f. Tm., 1896, XXII, 171; according to 

 Nocard Ziirn's canary plague is supposed to be identical with this 

 disease.) 



Infectious malady of canaries; described by Pfaff as a different 

 disease from the above. The bacillus is somewhat larger than that of 

 Kern, forms fine flakes in bouillon, does not grow on potato, is harmless 

 for chickens, and pathogenic for pigeons. Constant lesions; small ne- 

 crotic foci in the liyer and spleen (Cbl. f. Bakt., 1905, XXXVIII, 275) ; 

 a similar disease was described by "Wasielewsky & Hoffmann (A. f. Hyg., 

 1903, XLVII, 44) and recently by Zwick (Z. f. Infkr., 1908, IV, 33.) 



Septicemia of canary birds ; described by Freese as a very severe 

 disease similar to the cholera of canaries, but does not liquefy gelatin 



