2950 DISEASES OF DOMESTICATED BIRDS 
in one position a long time without moving. Death occurs in from 
one to four hours. 
Morbid anatomy. The eyelids are closed with a purulent secre- 
tion, the cornea is covered with white spots, the aqueous humor some- 
times is opaque. The pericardium contains a gelatinous exudate 
and the heart muscle is pale. The liver is softened, the intestines 
and mesentery are congested. A fibrinous exudate occurs on the 
peritoneum of some birds. 
DUCK CHOLERA 
Cornil and Toupet described a disease of ducks which resembles 
fowl cholera very closely. The authors differentiate it from that 
disease on the basis of the non-susceptibility of fowls and pigeons 
to cultures of the organism isolated from the ducks. 
SEPTICEMIC INFECTION OF WATERFOWL 
Willach observed a cholera-like infection among waterfowl. The 
outbreak involved Pekin ducks, swans and geese. . 
Symptoms. The affected birds show dullness, apathy, inap- 
petence, marked thirst, difficulty in swallowing and hoarseness. 
They die suddenly without spasms. 
Morbid anatomy. Autopsy reveals lesions of fowl cholera. 
Etiology. Examination of the blood reveals an organism resem- 
bling that of fowl cholera. However, it differs from it in several 
particulars. 
Pathogenicity. Hens, ducks, pigeons and mice succumb to the 
infection. 
REFERENCES 
1. Bugge. Ansteckende Luftsackentziindung der Ganse. Zeitschr. f. 
Infektionskr. d. Haustiere, Bd. 3, 1907, p. 470. 
2. Curtice. Goose septicemia. Rhode Island Agr. Exp. Sta. Bull. 86, 
1902. 
3. Cornil et Toupet. Sur eine nouvelle maladie bacterienne du canard 
(choléra des canards). Compt. rend. Soc. de biol., T. 106, 1888, p. 1747. 
4. Freese. Ueber eine durch den Staphylococcus pyogenes aureus 
hervorgerufene Osteo-Arthritis bei jungen Gansen und Enten. Deutsche 
tiertratl. Wehnschr., Bd. 15, 1907, S. 322. 
5. Frosch u. Birnbaum. Ueber eine durch den Bacillus septicemize 
anserum exudative (Riemer) bedingte Gianseseuche, Zugleich ein Beitrag 
zur Frage dere Pseudoinfluenzabacillen. Centralbl. f. Bakteriol. (Etc.), 
1 Abt. Orig., Bd. 52, 1909, S. 433. : 
