34 GUAM AGRICULTURAL EXPERIMENT STATION. 



gives rise to sj'mptoms of astliinu and is commonly known by the 

 })eople in all parts of the island by that name. 



The chief symptoms are a bloody mucous discharge from the eyes 

 and nostrils, eyelids swollen and inflamed, mucous membrane of the 

 mouth anemic with purple blotches, back of ears soft and puffy, 

 and ventral surface of the body red with purple patches. Most of 

 the symptoms do not appear until about 12 hours before death 

 occurs, and they are not constant in all cases. 



After death, the lungs are badly congested and more or less con- 

 solidated. The bronchial tubes are filled with a quantity of frothy 

 material. Numerous tubercles, found embedded in the lung tissue, 

 contain the parasite, or its debris, along with purulent or caseous 

 material. The bronchial Ij^mph glands are enlarged and congested. 



DISEASES OF POULTRY. 

 WHITE DIARRHEA. 



Among chicks up to 6 weeks of age at the station, white diarrhea 

 causes large losses. This disease has been described as existing in two 

 forms, namely, the bacillary form and the coccidium form. Post- 

 mortem and microscopic studies have shown that only the latter form 

 exists here. 



The following symptoms have been observed among the affected 

 chicks at this station: Position stilted; attitude dull, sleepy, and 

 listless; eyes closed a great portion of the time; wings drooping; 

 head generally drawn well back; back bowed and shortened; abdo- 

 men pendulous and full behind; discharge from bowels thin, white, 

 frothy, and sticky, matting together the feathers around the vent. 



Upon post-mortem examination the liver is found to be some- 

 what paler than normal, friable, with areas of congestion. The gall 

 bladder is usually much distended. The unabsorbed yolk in some 

 cases fills the greater portion of the abdominal cavitj^ The intestines 

 are usually almost empty of .feces but contain considerable gas, while 

 the cloaca is in many cases filled with a white, cheesy material. Some 

 disease disturbance is always found affecting the ceca, which may be 

 bulging with yellowish, semifluid ingesta, or maj'^ be filled with solid 

 material and a considerable gas formation, but most often with a 

 hard, blood-stained, caseous substance. In many cases the mucous 

 membrane of the wall of the ceca is almost totally destroyed, leaving 

 only the transparent, serous coat. 



The station has had considerable success in combating white diar- 

 rhea. In the first place, the houses and yards were cleaned daily, 

 and all refuse was burned. The chicks were kept in the incubator 

 at least 52 hours after hatching, during which time they received no 

 food but were given on the last day and thereafter for six weeks 



