502 



After a time othei- syinptums (ie\>'lijp. 'J'he sick animals 

 become dull and listless, ivmain apart Irnm the rest nf tin- 

 flock; the feathers are ruffled and the wings drop, the appe- 

 tite is lost and the birds allow themselves to be easily caught. 

 Although it was stated that in the beginning of the trouble 

 the appetite is not disturbed, the sick animals develop an in- 

 tense thirst for cold water. When it rains they run under the 

 eaves in order to catch water, and in winter are eager far ice 

 water. 



At reading this some experienced puultiy raisers will probably 

 reply that many chickens which are not sick are fond of very 

 cold W'ater. The droppings are also thicker or thinner ac- 

 cording to the food. Both of these facts are known to me 

 (Zurn). At the same time I look with suspicion of tapeworms 

 upon every chicken which shows an especial thirst for cold 

 water; and as for the droppings, the fowls infected' with tape- 

 worms have droppings mixed with mucus and blood, and pass 

 their excrements much oftener than other fowls do. 



The intestinal catarrh often ends fatally. 



Upon post-mortem the body is seen to be thin and anaemic. 

 The intestine generally contains no food, the mucosa is soft and 

 hyperaemic and covered with reddish yellow, moi'e or less thick, 

 purulent mucus. According to Hertwig epileptic attacks are 

 frequently noticed in chickens affected with intestinal worms. 



The diagnosis by sjjnptoms seems to me very uncer- 

 tain, and although the symptoms decribed by Ziiiii 

 serve as an indication of the disease, they can not be 

 taken as proof. The diagnosis by hunting in the 

 droppings for segments of the parasite is less satis- 

 factory than would be supposed, for it is not rare to 

 find chickens badly infested with tapeworms when it 

 has been impossible to discover segments in the man 

 ure. This method is rendered doubly uncertain be- 

 cause the color of the segments is about the same as 

 the urine in the faeces. Microscopic exnmination of the 

 faeces for eggs is quite a certain though not positive 

 method for diagnosis of tapeworm disease of ])oultry, 

 but it is llmroughly impracticable for the farmer to 

 attemi»l it. The best method foi- tlie farmer to follow 



