some that tlic disiasc is in fatt prodiiced by a vege- 

 table parasite, but as yet 

 this has not been proven. 



The other variety of 

 l)ody manne is caused by 

 a parasite l<nn\vH as 

 Sarcoptes kevis. Of 



late years it has been 

 (^ommon in Europe, and 

 has prevailed especially 

 durinfc the spring and 

 summer. It may begin 

 on any part of the body 

 and usually spreads nn 

 til the entire skin is af- 

 fected. When it has 

 reached this stage tlie 

 whole body is bare and 

 the only feathers that re- 

 main are a few in tlie tiiil and some in the wings. 

 The skin is healthy in appearance, with the exception 

 that it is devoid of covering. It is smooth, flexible 

 and normal in color. There is no itching and the gen- 

 eral health of the fowl is usually good, although some- 

 times, after having been afflicted for a long time it may 

 become thin and gradually' waste away. ^Yhen feath- 

 ers are pulled out on the border of the diseased area 

 it is noticed that the lower end of the sheath is covered 

 with scaly layers and the jiarasite can usually be dis- 

 covered among them. 



Schaeffer has recently reported a case where this 

 disease appeared among a flock of 70 hens and nearly 

 all of them lost all of their feathers, with the exception 

 of those in the wings and tail. The parasite could 



The Parasite of One Form of Body 



J— Mange of Fowls. 



Eliklcrmnfjtts hihiljatvs, male-loO times 



actual size. 



