118 DISEASES OF POULTRY. 



flock of 36 geese on one farm, was reported by Lucet. 

 These birds had been gathered from different 

 places, were about two months old, and it was 

 supposed they had acquired the germs in a pool 

 where they drank. The disease was at first ob- 

 scure, and was manifested by arrest of growth, ema- 

 ciation, difficult and stumbling walk, a yellow and 

 fetid diarrhea, and plaintive cries emitted from time 

 to time. The appetite remained normal until nearly 

 the last — death ensuing in five to seven days after the 

 appearance of the first symptoms. The disease was 

 due to Drepanidotcenia setigera. The number in each 

 goose was always high, as many as 93 being found. 

 With these worms were also found 3 or 4 of the Dre- 

 panidotcenia lanceolata. 



Various authors have reported enzootics due to the 

 Heterakis perspicillum (Heterakis inflexa) . Megnin 

 gives the symptoms as loss of appetite, emaciation, in- 

 difference, somnolency with sudden starts of wakeful- 

 ness, and diarrhea. In one outbreak about thirty 

 worms were found in each fowl that had died ; in 

 another, pellets of the worms as large as a pigeon's 

 egg were found obstructing the duodenum. 



Lucet observed verminous enteritis in poultry -yards, 

 due to the association of various species of worms. 

 The affection made slow progress, and the fowls at- 

 tacked preserved their appetite, but lost condition and 

 became dull and indifferent. lyater, the plumage lostits 

 lustre and became erect ; while the wings were droop - 

 ing and the movements languid. A fetid diarrhea set 

 in, wasting became more marked, and the appetite was 

 diminished. Soon the creatures remained immovable 

 and huddled up, with their eyes half closed ; the comb 

 and mucous membranes lost their color ; the tempera- 



