DISEASES OF POULTRY. 



139 



vealed an enormous enlargement of the two kidneys, 

 and upon cutting across these organs there were seen 



numerous black points, 

 each representing a small 

 interstitial hemorrhage. 

 The disease has, also 

 been observed by Inarch -, 

 er, Semmer, and others. 

 It is often seen with 

 pullets. The affected 

 birds stop growing, lose 

 their appetite, become 

 thin, with improperly 

 developed feathers and 

 roughened plumage. The 

 kidneys are found two 

 or three times their nor- 

 mal size, of a grayish 

 color'and more firm than 

 in health. Microscopic 

 examination has reveal- 

 ed the existence of min- 

 ute organisms , and Sem - 

 mer thinks that the dis- 

 ease might be caused by 

 toxic fungi contained in 



Fig- 31.— Reproductive organs of the the food. 

 cock; ff, «, testicles; b^ b, epididymis; c, 



■c. vas deferens; rf, cloaca; rf' bursa of ABSCESS OF THE KID- 

 Fabrlcius;^', ^', papillae through which 



the vas deferens open; ft marg-in of NEYS. 



anus. 



A case of this disease 

 was observed by Megnin in a small cage bird. The 

 kidney was found to contain a yellow nodule formed 

 by dried pus. No other sign of disease was discover- 

 ed. The bird had been ill for a month but contin- 



