DISEASES OF POULTRY. 



119 



ture was below normal; the appetite disappeared, and 

 the feet were swollen. These fowls often yawned, 

 and their torpor and ancemia were extreme; death 

 ensued in a tranquil manner 

 in the course of one or two 

 months. On postniorton ex- 

 amination there was observed, 

 in addition to the emaciation, 

 the lesions of a chronic diar- 

 rheic enteritis and the follow- 

 ing parasitic worms : Davainca 

 p ro i>;lottina, Drepanidotcenia 

 i n t undibiiliformis , D avainc a 

 cesticillus, Hctcrakis papu- 

 losa^ Heterakis perspicillum 

 and Trichosoina collare. The 

 Davainea proglottiiia wa.5 the 

 principal cause of the malady 

 and in each case was found in 

 thousands. Tho: H e t e ra k i s 

 papulosa and Heterakis per- 

 spicillum were less constant, 

 though they had taken a good 

 share in the development of the 



disease. FI?. 26.- Notocotyle verrucosum. 



The Heterakis inacitlosa often exists in enormous num- 

 bers in the intestines of pigeons and may be so disas- 

 trous in their effects as to prevent the raising of these 

 birds. As many as 400 to 500 of these worms may be 

 found in the intestine of one bird. A microscopic ex- 

 amination of the affected bird's excrement reveals in- 

 numerable masses of the ova or eggs of the Heterakis. 

 In about 7 grams (2 drams) of excrement passed by a 



