86 DISEASES OF DOMESTICATED BIRDS 
the escape of the so-called phosphorus vapor from an opening in the 
gizzard or crop and by the characteristic smell. 
Next in similarity is fowl cholera. This is characterized by the 
occurrence of subepicardial hemorrhages, an exudate in the peri- 
cardium, a marked inflammation of the intestine and by the in- 
flammation frequently occurring in the lungs. In only a few cases 
would these lesions be confounded with those of fowl pest. 
Rabbit inoculation is valuable, for this animal is immune to 
fowl pest and susceptible to fowl cholera. Spirochetosis will be 
suggested by the drowsiness and paralytic symptoms and must be 
differentiated by microscopic examination of blood taken during an 
early stage. In spirochetosis such blood will be found to contain 
spircchetes, but such an examination will be misleading, if the 
sample be drawn after the crisis has occurred. 
Preventive measures. Treatment is unavailing. The general 
sanitary measures such as recommended for cholera, should be em- 
ployed. 
Attempts to immunize by vaccination with diluted red corpuscles 
have failed. A slight measure of success by vaccination with virus 
killed by ether, has been obtained. Birds after two vaccinations 
were protected to a slight extent in that death was delayed. 
The agency of poultry exhibitions in rapidly disseminating the 
infection should be borne in mind. The disease apparently gained 
a wide distribution in Germany as a result of a show held in Bruns- 
wick in 1901. 
REFERENCES 
1. Belfanti and Ascoli. Spigolature nella Peste Aviaria e nell’ Afta. 
Clin. Vet., Vol. 39, 1916, p. 577. 
9. Centanni. Die Vogelpest; Beitrag zu dem durch Kerzen filtrirbaren 
Virus. Centralbl. f. Bakteriol. (Hic.), 1 Abt. Orig., Bd. 31, 1902, S. 145. 
3. Cominotti. Peste aviaria nella anitre. Clin. Vet., Vol. 39, 1916, 
p. 129. 
4. Dubois. Une maladie infectieuse des poules 4 microbes invisibles. 
Compt. rend. Soc. de biol., Vol. 54, 1902, p. 1162. 
5. Freese. Ueber MHiihnerpest mit besonderer Beriicksichtung der 
pathologischen Anatomie. Deutsche tierdrztl. Wchenschr., Bd. 16, 1908, 
S. 173. 
6. Hertel. Ueber Gefliigel-cholera und MHiihnerpest. Arb. a. d. k. 
Gsndhtsamte., Bd. 20, 1904, S. 453. 
7. Soest. Beitrag zur Kenntnis der Bakterienflora des Hiihnerdarmes 
nebst einigen Bermerkungen iiber eine neue MHiihnerseuche. Berl. 
tierdratl. Wchnschr., 1902, S. 241. 
