100 DISEASES OF POULTRY. 



there was catarrh of the mucous surface. A peculiar 

 bacterium was found in the duodenal contents. A 

 guinea pig was inoculated subcutaneously with a 

 small quantity of material from the duodenum and died 

 in the course of twenty-four hours with an extremely 

 cedematous and necrotic condition of the tissues over 

 the abdomen. The germ was found in the tissues 

 at the point inoculated and, also, in the liver, 

 spleen, abdominal exudate, heart-blood and lungs. 

 Rabbits were inoculated and fed with cultures of the 

 organism without result, except when half a cubic cen- 

 timeter was injected into the abdomen, in which case 

 death followed within twenty-four hours, In the 

 rabbits treated in this way, there was severe inflamma- 

 tion of the duodenum and omentum, and the germ was 

 recovered in large numbers from the walls and con- 

 tents of the duodenum and from the liver. Chickens 

 were inoculated subcutaneously, into the abdomen and 

 into the veins, and were also fed upon cultures with- 

 out causing disease in them. Pigeons, mice and rats 

 were refactory. 



The presence of this germ in the diseased intestines 

 of the fowls and its pronounced disease-producing 

 powers when inoculated in guinea pigs and rabbits 

 warrants the suspicion that it is the cause of the duo- 

 denitis and emaciation of the fowls. It is probably 

 necessary for it to reach the interior of the duodenum 

 before it can cause disease in birds. This germ differs 

 materially from the microbes of bacterial enteritis de- 

 scribed by other investigators, but the diseases are of 

 a similar nature and the treatment shoula be the same. 



PSOROSPEEMIC ENTERITIS. 



This is a disease caused by the lowest forms of ani- 



